Editing Alameda County, California (section)

==Demographics==
{{US Census population
|1860= 8927
|1870= 24237
|1880= 62976
|1890= 93864
|1900= 130197
|1910= 246131
|1920= 344177
|1930= 474883
|1940= 513011
|1950= 740315
|1960= 908209
|1970= 1073184
|1980= 1105379
|1990= 1279182
|2000= 1443741
|2010= 1510271
|2020= 1682353
|estimate= 1649060
|estyear=2024
|estref=<ref>{{cite web|url=https://www.census.gov/quickfacts/alamedacountycalifornia|title=QuickFacts Alameda County, California|publisher=United States Census Bureau|access-date=May 9, 2025}}</ref>
|align-fn=center
|footnote=U.S. Decennial Census<ref name="DecennialCensus">{{cite web|url=https://www.census.gov/prod/www/decennial.html|title=Census of Population and Housing from 1790-2000|publisher=[[US Census Bureau]]|access-date=January 24, 2022}}</ref><br />1790–1960<ref>{{cite web|url=http://mapserver.lib.virginia.edu|title=Historical Census Browser|publisher=University of Virginia Library|access-date=September 24, 2015}}</ref> 1900–1990<ref>{{cite web|url=https://www.census.gov/population/cencounts/ca190090.txt|title=Population of Counties by Decennial Census: 1900 to 1990|publisher=United States Census Bureau|editor-last=Forstall|editor-first=Richard L.|date=March 27, 1995|access-date=September 24, 2015}}</ref><br />1990–2000<ref>{{cite web|url=https://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf|title=Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000|publisher=United States Census Bureau|date=April 2, 2001|access-date=September 24, 2015}}</ref> 2010<ref name=2010CensusP2/> 2020<ref name=2020CensusP2/>
}}

===2020 census===
{| class="wikitable" style="text-align:center;"
|+'''Alameda County, California – Racial and ethnic composition'''<br><small>{{nobold|''Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.''}}</small>
!Race / Ethnicity <small>(''NH = Non-Hispanic'')</small>
!Pop 2000<ref name=2000CensusP004>{{Cite web|title=P004: Hispanic or Latino, and Not Hispanic or Latino by Race – 2000: DEC Summary File 1 – Alameda County, California |url=https://data.census.gov/table?g=0500000US06001&tid=DECENNIALSF12000.P004|publisher=[[United States Census Bureau]] |access-date= }}</ref>
!Pop 2010<ref name=2010CensusP2>{{cite web|title=P2 Hispanic or Latino, and Not Hispanic or Latino by Race – 2010: DEC Redistricting Data (PL 94-171) – Alameda County, California|url=https://data.census.gov/cedsci/table?q=p2&g=0500000US06001&tid=DECENNIALPL2010.P2|website=[[United States Census Bureau]]}}</ref>
!{{partial|Pop 2020}}<ref name=2020CensusP2>{{cite web|title=P2 Hispanic or Latino, and Not Hispanic or Latino by Race – 2020: DEC Redistricting Data (PL 94-171) – Alameda County, California|url=https://data.census.gov/cedsci/table?q=p2&g=0500000US06001&tid=DECENNIALPL2020.P2|website=[[United States Census Bureau]]}}</ref>
!% 2000
!% 2010
!{{partial|% 2020}}
|-
|[[Non-Hispanic or Latino whites|White]] alone (NH)
|591,095
|514,559
|style='background: #ffffe6; |472,277
|40.94%
|34.07%
|style='background: #ffffe6; |28.07%
|-
|[[Non-Hispanic or Latino African Americans|Black or African American]] alone (NH)
|211,124
|184,126
|style='background: #ffffe6; |159,499
|14.62%
|12.19%
|style='background: #ffffe6; |9.48%
|-
|[[Native Americans in the United States|Native American]] or [[Alaska Native]] alone (NH)
|5,306
|4,189
|style='background: #ffffe6; |4,131
|0.37%
|0.28%
|style='background: #ffffe6; |0.25%
|-
|[[Asian Americans|Asian]] alone (NH)
|292,673
|390,524
|style='background: #ffffe6; |540,511
|20.27%
|25.86%
|style='background: #ffffe6; |32.13%
|-
|[[Native Hawaiian]] or [[Pacific Islander Americans|Pacific Islander]] alone (NH)
|8,458
|11,931
|style='background: #ffffe6; |13,209
|0.59%
|0.79%
|style='background: #ffffe6; |0.79%
|-
|[[Race and ethnicity in the United States census|Other Race]] alone (NH)
|4,676
|4,191
|style='background: #ffffe6; |10,440
|0.32%
|0.28%
|style='background: #ffffe6; |0.62%
|-
|[[Multiracial Americans|Mixed race or Multiracial]] (NH)
|56,499
|60,862
|style='background: #ffffe6; |88,537
|3.91%
|4.03%
|style='background: #ffffe6; |5.26%
|-
|[[Hispanic and Latino Americans|Hispanic or Latino]] (any race)
|273,910
|339,889
|style='background: #ffffe6; |393,749
|18.97%
|22.51%
|style='background: #ffffe6; |23.40%
|-
|'''Total'''
|'''1,443,741'''
|'''1,510,271'''
|style='background: #ffffe6; |'''1,682,353'''
|'''100.00%'''
|'''100.00%'''
|style='background: #ffffe6; |'''100.00%'''
|}

===2014===
[[File:Ethnic Origins in Alameda County, CA.png|thumb|330x330px|Ethnic origins in Alameda County]]
A 2014 analysis by ''[[The Atlantic]]'' found Alameda County to be the fourth most racially diverse county in the United States, in terms of closest to equal representation of each racial and ethnic group,—behind [[Aleutians West Census Area, Alaska|Aleutians West Census Area]] and [[Aleutians East Borough, Alaska|Aleutians East Borough]] in Alaska, and [[Queens|Queens County]] in New York—as well as the most diverse county in California.<ref>{{Cite news|url=https://www.theatlantic.com/national/archive/2014/04/mapping-racial-diversity-by-county/361388/|title=The 5 U.S. Counties Where Racial Diversity Is Highest—and Lowest|last=Narula|first=Svati Kirsten|date=April 29, 2014|work=The Atlantic|access-date=May 8, 2017|language=en-US}}</ref> The 2020 census shows Alameda as having one of the highest Asian percentages and being one of two counties in the continental US, along with neighboring [[Santa Clara County, California]], to have an Asian plurality - consisting largely of Chinese, Indian and Filipino ancestry.<ref>{{cite web |url=http://www.justicemap.org/2020/index.php?gsLayer=plural&gfLon=-95.3&gfLat=39.6&giZoom=4&gsGeo=county&giAdvanced=1& |access-date=January 19, 2022| title=Justice Map - Visualize race and income data for your community }}</ref>

=== 2011 ===

{| class="wikitable sortable collapsible collapsed"
|-
! colspan="6" | Population, race, and income
|-
! scope="row" style="text-align: left;" | Total population<ref name="US-CB-B02001">U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B02001. [https://www.census.gov U.S. Census website]  . Retrieved October 26, 2013.</ref>
| colspan="2" | 1,494,876
|-
! scope="row" style="text-align: left;" | &nbsp;&nbsp;White<ref name="US-CB-B02001" />
| 690,261
| 46.2%
|-
! scope="row" style="text-align: left;" | &nbsp;&nbsp;Asian<ref name="US-CB-B02001" />
| 391,627
| 26.2%
|-
! scope="row" style="text-align: left;" | &nbsp;Hispanic or Latino (of any race)<ref name="US-CB-B03003">U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B03003. [https://www.census.gov U.S. Census website]  . Retrieved October 26, 2013.</ref>
| 332,103
| 22.2%
|-
! scope="row" style="text-align: left;" | &nbsp;&nbsp;Black or African American<ref name="US-CB-B02001" />
| 186,326
| 12.5%
|-
! scope="row" style="text-align: left;" | &nbsp;&nbsp;Some other race<ref name="US-CB-B02001" />
| 131,958
| 8.8%
|-
! scope="row" style="text-align: left;" | &nbsp;&nbsp;Two or more races<ref name="US-CB-B02001" />
| 75,411
| 5.0%
|-
! scope="row" style="text-align: left;" | &nbsp;&nbsp;Native Hawaiian or other Pacific Islander<ref name="US-CB-B02001" />
| 12,191
| 0.8%
|-
! scope="row" style="text-align: left;" | &nbsp;&nbsp;American Indian or Alaska Native<ref name="US-CB-B02001" />
| 7,102
| 0.5%
|-
! scope="row" style="text-align: left;" | Per capita income<ref name="US-CB-B19301">U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B19301. [https://www.census.gov U.S. Census website]  . Retrieved October 21, 2013.</ref>
| colspan="2" | $34,937
|-
! scope="row" style="text-align: left;" | Median household income<ref name="US-CB-B19013">U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B19013. [https://www.census.gov U.S. Census website]  . Retrieved October 21, 2013.</ref>
| colspan="2" | $70,821
|-
! scope="row" style="text-align: left;" | Median family income<ref name="US-CB-B19113">U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B19113. [https://www.census.gov U.S. Census website]  . Retrieved October 21, 2013.</ref>
| colspan="2" | $87,012
|}

==== Places by population, race, and income ====

{| class="wikitable sortable mw-collapsible mw-collapsed" style="width: 100%;"
|-
! colspan="9" | Places by population and race
|-
! Place
! Type<ref name="US-CB">U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates. [https://www.census.gov U.S. Census website]  . Retrieved October 21, 2013.</ref>
! data-sort-type="number" | Population<ref name="US-CB-B02001"/>
! data-sort-type="number" | White<ref name="US-CB-B02001"/>
! data-sort-type="number" | Other<ref name="US-CB-B02001"/><br /><ref name="other" group=note>Other = Some other race + Two or more races</ref>
! data-sort-type="number" | Asian<ref name="US-CB-B02001"/>
! data-sort-type="number" | Black or African<br />American<ref name="US-CB-B02001"/>
! data-sort-type="number" | Native American<ref name="US-CB-B02001"/><br /><ref name="na" group=note>Native American = Native Hawaiian or other Pacific Islander + American Indian or Alaska Native</ref>
! data-sort-type="number" | Hispanic or Latino<br />(of any race)<ref name="US-CB-B03003"/>
|-
| [[Alameda, California|Alameda]] || [[List of cities and towns in California|City]] || 73,239 || 49.5% || 9.8% || 33.1% || 6.7% || 0.9% || 11.8%
|-
| [[Albany, California|Albany]] || [[List of cities and towns in California|City]] || 18,217 || 60.7% || 7.0% || 29.1% || 3.0% || 0.1% || 9.7%
|-
| [[Ashland, California|Ashland]] || [[Census-designated place|CDP]] || 22,106 || 53.4% || 11.9% || 16.4% || 17.0% || 1.3% || 46.7%
|-
| [[Berkeley, California|Berkeley]] || [[List of cities and towns in California|City]] || 111,008 || 61.5% || 8.0% || 20.6% || 9.3% || 0.6% || 10.5%
|-
| [[Castro Valley, California|Castro Valley]] || [[Census-designated place|CDP]] || 60,882 || 62.9% || 7.9% || 21.7% || 6.8% || 0.8% || 17.4%
|-
| [[Cherryland, California|Cherryland]] || [[Census-designated place|CDP]] || 14,394 || 46.8% || 31.1% || 9.0% || 8.6% || 4.5% || 55.9%
|-
| [[Dublin, California|Dublin]] || [[List of cities and towns in California|City]] || 44,171 || 57.5% || 8.7% || 26.2% || 6.9% || 0.7% || 12.9%
|-
| [[Emeryville, California|Emeryville]] || [[List of cities and towns in California|City]] || 9,698 || 44.1% || 5.7% || 36.3% || 13.8% || 0.2% || 8.8%
|-
| [[Fairview, California|Fairview]] || [[Census-designated place|CDP]] || 9,597 || 49.2% || 13.5% || 18.1% || 17.7% || 1.5% || 18.5%
|-
| [[Fremont, California|Fremont]] || [[List of cities and towns in California|City]] || 211,748 || 33.9% || 12.8% || 49.0% || 3.3% || 1.1% || 15.4%
|-
| [[Hayward, California|Hayward]] || [[List of cities and towns in California|City]] || 142,936 || 36.9% || 24.9% || 23.6% || 11.4% || 3.2% || 39.9%
|-
| [[Livermore, California|Livermore]] || [[List of cities and towns in California|City]] || 79,710 || 78.9% || 8.4% || 10.3% || 1.8% || 0.5% || 19.0%
|-
| [[Newark, California|Newark]] || [[List of cities and towns in California|City]] || 42,322 || 42.1% || 24.4% || 26.2% || 4.3% || 3.0% || 35.2%
|-
| [[Oakland, California|Oakland]] || [[List of cities and towns in California|City]] || 389,397 || 39.0% || 15.7% || 16.1% || 28.1% || 1.1% || 25.0%
|-
| [[Piedmont, California|Piedmont]] || [[List of cities and towns in California|City]] || 10,640 || 76.1% || 3.4% || 19.5% || 0.9% || 0.1% || 3.9%
|-
| [[Pleasanton, California|Pleasanton]] || [[List of cities and towns in California|City]] || 69,220 || 68.0% || 6.2% || 22.9% || 2.5% || 0.4% || 10.6%
|-
| [[San Leandro, California|San Leandro]] || [[List of cities and towns in California|City]] || 83,877 || 44.9% || 10.2% || 29.6% || 13.4% || 1.9% || 26.0%
|-
| [[San Lorenzo, California|San Lorenzo]] || [[Census-designated place|CDP]] || 24,096 || 54.1% || 17.2% || 20.8% || 6.5% || 1.4% || 35.9%
|-
| [[Sunol, California|Sunol]] || [[Census-designated place|CDP]] || 760 || 84.3% || 11.6% || 4.1% || 0.0% || 0.0% || 15.8%
|-
| [[Union City, California|Union City]] || [[List of cities and towns in California|City]] || 68,830 || 21.5% || 17.8% || 53.3% || 6.2% || 1.2% || 21.5%
|}

{| class="wikitable sortable mw-collapsible mw-collapsed" style="width: 100%;"
|-
! colspan="6" | Places by population and income
|-
! Place
! Type<ref name="US-CB" />
! Population<ref name="US-CB-B01003">U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B01003. [https://www.census.gov U.S. Census website]  . Retrieved October 21, 2013.</ref>
! data-sort-type="currency" | Per capita income<ref name="US-CB-B19301" />
! data-sort-type="currency" | Median household income<ref name="US-CB-B19013" />
! data-sort-type="currency" | Median family income<ref name="US-CB-B19113" />
|-
| [[Alameda, California|Alameda]] || [[List of cities and towns in California|City]] || 73,239 || $39,160 || $75,832 || $93,349
|-
| [[Albany, California|Albany]] || [[List of cities and towns in California|City]] || 18,217 || $37,552 || $72,479 || $87,500
|-
| [[Ashland, California|Ashland]] || [[Census-designated place|CDP]] || 22,106 || $20,357 || $48,026 || $53,038
|-
| [[Berkeley, California|Berkeley]] || [[List of cities and towns in California|City]] || 111,008 || $38,896 || $60,908 || $102,976
|-
| [[Castro Valley, California|Castro Valley]] || [[Census-designated place|CDP]] || 60,882 || $38,535 || $82,370 || $97,628
|-
| [[Cherryland, California|Cherryland]] || [[Census-designated place|CDP]] || 14,394 || $19,610 || $50,987 || $48,120
|-
| [[Dublin, California|Dublin]] || [[List of cities and towns in California|City]] || 44,171 || $41,197 || $111,481 || $121,380
|-
| [[Emeryville, California|Emeryville]] || [[List of cities and towns in California|City]] || 9,698 || $52,258 || $69,274 || $99,954
|-
| [[Fairview, California|Fairview]] || [[Census-designated place|CDP]] || 9,597 || $38,267 || $85,288 || $97,969
|-
| [[Fremont, California|Fremont]] || [[List of cities and towns in California|City]] || 211,748 || $38,752 || $98,513 || $109,853
|-
| [[Hayward, California|Hayward]] || [[List of cities and towns in California|City]] || 142,936 || $24,987 || $62,115 || $69,044
|-
| [[Livermore, California|Livermore]] || [[List of cities and towns in California|City]] || 79,710 || $41,741 || $96,322 || $108,406
|-
| [[Newark, California|Newark]] || [[List of cities and towns in California|City]] || 42,322 || $29,375 || $81,777 || $84,244
|-
| [[Oakland, California|Oakland]] || [[List of cities and towns in California|City]] || 389,397 || $31,675 || $51,144 || $58,237
|-
| [[Piedmont, California|Piedmont]] || [[List of cities and towns in California|City]] || 10,640 || $92,232 || $199,304 || $221,875
|-
| [[Pleasanton, California|Pleasanton]] || [[List of cities and towns in California|City]] || 69,220 || $50,745 || $118,713 || $136,464
|-
| [[San Leandro, California|San Leandro]] || [[List of cities and towns in California|City]] || 83,877 || $27,878 || $61,857 || $72,080
|-
| [[San Lorenzo, California|San Lorenzo]] || [[Census-designated place|CDP]] || 24,096 || $25,553 || $73,053 || $76,365
|-
| [[Sunol, California|Sunol]] || [[Census-designated place|CDP]] || 760 || $62,651 || $72,656 || $86,250
|-
| [[Union City, California|Union City]] || [[List of cities and towns in California|City]] || 68,830 || $29,612 || $82,634 || $91,176
|}

===2010===
The [[2010 United States census]] reported that Alameda County had a population of 1,510,271. The population density was {{convert|2,047.6|PD/sqmi|PD/km2|sp=us|adj=off}}. The racial makeup of Alameda County was 649,122 (43.0%) [[White (U.S. Census)|White]], 190,451 (12.6%) [[African American (U.S. Census)|African American]], 9,799 (0.6%) [[Native American (U.S. Census)|Native American]], 394,560 (26.1%) [[Asian (U.S. Census)|Asian]] (9.7% Chinese, 5.5% Filipino, 4.8% Indian, 2.0% Vietnamese, 1.2% Korean, 0.8% Japanese, 2.2% Other Asian), 12,802 (0.8%) [[Pacific Islander (U.S. Census)|Pacific Islander]], 162,540 (10.8%) from [[Race (United States Census)|other races]], and 90,997 (6.0%) from two or more races.  [[Hispanic (U.S. Census)|Hispanic]] or [[Latino (U.S. Census)|Latino]] of any race were 339,889 persons (22.5%): 16.4% Mexican, 0.8% Puerto Rican, 0.2% Cuban, 5.1% Other Hispanic.<ref>{{USCensus2010CA}}</ref>
{|
|-
|align="left" |
{| class="wikitable sortable collapsible collapsed" style="margin-left:auto;margin-right:auto;text-align: right;font-size: 90%;"
! Demographic profile<ref>{{Cite web|url=http://www.bayareacensus.ca.gov|title=Bay Area Census|website=www.bayareacensus.ca.gov}}</ref>
! 2010
|-
|align="left" | Total Population || 1,510,271 – 100.0%
|-
|align="left" | One Race || 1,419,274 – 94.0%
|-
|align="left" | Not Hispanic or Latino || 1,170,382 – 77.5%
|-
|align="left" | White alone || 514,559 – 34.1%
|-
|align="left" | Black or African American alone || 184,126 – 12.2%
|-
|align="left" | American Indian and Alaska Native alone || 4,189 – 0.3%
|-
|align="left" | Asian alone || 390,524 – 25.9%
|-
|align="left" | Native Hawaiian and Other Pacific Islander alone || 11,931 – 0.8%
|-
|align="left" | Some other race alone || 4,191 – 0.3%
|-
|align="left" | Two or more races alone || 60,862 – 4.0%
|-
|align="left" | Hispanic or Latino (of any race) || 339,889 – 22.5%
|}
|}

{| class="wikitable collapsible collapsed"
|-
!colspan="10"|Population reported at [[2010 United States census]]
|- style="text-align:center;"
|'''The County''' ||'''Total<br />Population'''||'''[[White (U.S. Census)|White]]''' ||'''[[African American (U.S. Census)|African<br />American]]''' ||'''[[Native American (U.S. Census)|Native<br />American]]''' ||'''[[Asian (U.S. Census)|Asian]]''' ||'''[[Pacific Islander (U.S. Census)|Pacific<br />Islander]]''' ||'''[[Race (United States Census)|other<br />races]]''' ||'''two or<br />more races''' ||'''[[Hispanic (U.S. Census)|Hispanic]]<br />or [[Latino (U.S. Census)|Latino]]<br />(of any race)'''
|-
|''' Alameda County'''
|align="right"|1,510,271||align="right"|649,122||align="right"|190,451||align="right"|9,799||align="right"|394,560||align="right"|12,802||align="right"|162,540||align="right"|90,997||align="right"|339,889
|- style="text-align:center;"
|'''[[Incorporated city|Incorporated<br />cities]]''' ||'''Total<br />Population'''||'''[[White (U.S. Census)|White]]''' ||'''[[African American (U.S. Census)|African<br />American]]''' ||'''[[Native American (U.S. Census)|Native<br />American]]''' ||'''[[Asian (U.S. Census)|Asian]]''' ||'''[[Pacific Islander (U.S. Census)|Pacific<br />Islander]]''' ||'''[[Race (United States Census)|other<br />races]]''' ||'''two or<br />more races''' ||'''[[Hispanic (U.S. Census)|Hispanic]]<br />or [[Latino (U.S. Census)|Latino]]<br />(of any race)'''
|-
|''' [[Alameda, California|Alameda]]'''
|align="right"|73,812||align="right"|37,460||align="right"|4,759||align="right"|426||align="right"|23,058||align="right"|381||align="right"|2,463||align="right"|5,265||align="right"|8,092
|-
|''' [[Albany, California|Albany]]'''
|align="right"|18,539||align="right"|10,128||align="right"|645||align="right"|88||align="right"|5,790||align="right"|37||align="right"|607||align="right"|1,244||align="right"|1,891
|-
|'''[[Berkeley, California|Berkeley]]'''
|align="right"|112,580||align="right"|66,996||align="right"|11,241||align="right"|479||align="right"|21,690||align="right"|186||align="right"|4,994||align="right"|6,994||align="right"|12,209
|-
|'''[[Dublin, California|Dublin]]'''
|align="right"|46,036||align="right"|23,634||align="right"|4,347||align="right"|246||align="right"|12,321||align="right"|287||align="right"|2,458||align="right"|2,743||align="right"|6,663
|-
|'''[[Emeryville, California|Emeryville]]'''
|align="right"|10,080||align="right"|4,490||align="right"|1,764||align="right"|44||align="right"|2,775||align="right"|16||align="right"|348||align="right"|643||align="right"|927
|-
|'''[[Fremont, California|Fremont]]'''
|align="right"|214,089||align="right"|70,320||align="right"|7,103||align="right"|976||align="right"|108,332||align="right"|1,169||align="right"|13,605||align="right"|12,584||align="right"|31,698
|-
|'''[[Hayward, California|Hayward]]'''
|align="right"|144,186||align="right"|49,309||align="right"|17,099||align="right"|1,396||align="right"|31,666||align="right"|4,535||align="right"|30,004||align="right"|10,177||align="right"|58,730
|-
|'''[[Livermore, California|Livermore]]'''
|align="right"|80,968||align="right"|60,418||align="right"|1,702||align="right"|476||align="right"|6,802||align="right"|277||align="right"|6,960||align="right"|4,333||align="right"|16,920
|-
|'''[[Newark, California|Newark]]'''
|align="right"|42,573||align="right"|17,566||align="right"|2,002||align="right"|279||align="right"|11,571||align="right"|621||align="right"|7,735||align="right"|2,799||align="right"|14,994
|-
|'''[[Oakland, California|Oakland]]'''
|align="right"|390,724||align="right"|134,925||align="right"|109,471||align="right"|3,040||align="right"|65,811||align="right"|2,222||align="right"|53,378||align="right"|21,877||align="right"|99,068
|-
|'''[[Piedmont, California|Piedmont]]'''
|align="right"|10,667||align="right"|7,917||align="right"|144||align="right"|6||align="right"|1,939||align="right"|13||align="right"|94||align="right"|554||align="right"|421
|-
|'''[[Pleasanton, California|Pleasanton]]'''
|align="right"|70,285||align="right"|47,058||align="right"|1,190||align="right"|226||align="right"|16,322||align="right"|134||align="right"|2,002||align="right"|3,353||align="right"|7,264
|-
|'''[[San Leandro, California|San Leandro]]'''
|align="right"|84,950||align="right"|31,946||align="right"|10,437||align="right"|669||align="right"|25,206||align="right"|642||align="right"|11,295||align="right"|4,755||align="right"|23,237
|-
|'''[[Union City, California|Union City]]'''
|align="right"|69,516||align="right"|16,640||align="right"|4,402||align="right"|329||align="right"|35,363||align="right"|892||align="right"|7,253||align="right"|4,637||align="right"|15,895
|- style="text-align:center;"
|'''[[Census-designated place|Census-designated<br />places]]''' ||'''Total<br />Population'''||'''[[White (U.S. Census)|White]]''' ||'''[[African American (U.S. Census)|African<br />American]]''' ||'''[[Native American (U.S. Census)|Native<br />American]]''' ||'''[[Asian (U.S. Census)|Asian]]''' ||'''[[Pacific Islander (U.S. Census)|Pacific<br />Islander]]''' ||'''[[Race (United States Census)|other<br />races]]''' ||'''two or<br />more races''' ||'''[[Hispanic (U.S. Census)|Hispanic]]<br />or [[Latino (U.S. Census)|Latino]]<br />(of any race)'''
|-
|'''[[Ashland, California|Ashland]]'''
|align="right"|21,925||align="right"|6,705||align="right"|4,269||align="right"|232||align="right"|4,031||align="right"|260||align="right"|5,124||align="right"|1,304||align="right"|9,394
|-
|'''[[Castro Valley, California|Castro Valley]]'''
|align="right"|61,388||align="right"|35,602||align="right"|4,260||align="right"|329||align="right"|13,140||align="right"|417||align="right"|3,757||align="right"|3,883||align="right"|10,689
 |-
|'''[[Cherryland, California|Cherryland]]'''
|align="right"|14,728||align="right"|6,035||align="right"|1,698||align="right"|200||align="right"|1,404||align="right"|310||align="right"|4,016||align="right"|1,065||align="right"|7,955
 |-
|'''[[Fairview, California|Fairview]]'''
|align="right"|10,003||align="right"|4,499||align="right"|2,105||align="right"|76||align="right"|1,525||align="right"|129||align="right"|913||align="right"|756||align="right"|2,171
|-
|'''[[San Lorenzo, California|San Lorenzo]]'''
|align="right"|23,452||align="right"|11,115||align="right"|1,136||align="right"|228||align="right"|5,054||align="right"|182||align="right"|4,207||align="right"|1,530||align="right"|8,843
|-
|'''[[Sunol, California|Sunol]]'''
|align="right"|913||align="right"|780||align="right"|1||align="right"|6||align="right"|48||align="right"|7||align="right"|19||align="right"|52||align="right"|91
|- style="text-align:center;"
|'''Other<br />[[unincorporated area]]s''' ||'''Total<br />Population'''||'''[[White (U.S. Census)|White]]''' ||'''[[African American (U.S. Census)|African<br />American]]''' ||'''[[Native American (U.S. Census)|Native<br />American]]''' ||'''[[Asian (U.S. Census)|Asian]]''' ||'''[[Pacific Islander (U.S. Census)|Pacific<br />Islander]]''' ||'''[[Race (United States Census)|other<br />races]]''' ||'''two or<br />more races''' ||'''[[Hispanic (U.S. Census)|Hispanic]]<br />or [[Latino (U.S. Census)|Latino]]<br />(of any race)'''
|-
|All others not CDPs (combined)
|align="right"|8,857||align="right"|5,579||align="right"|676||align="right"|48||align="right"|712||align="right"|85||align="right"|1,308||align="right"|449||align="right"|2,737
|}

===2000===
As of the [[census]]<ref name="GR8">{{cite web|url=https://www.census.gov |publisher=[[United States Census Bureau]] |access-date=May 14, 2011 |title=U.S. Census website  }}</ref> of 2000, there were 1,443,741 people, 523,366 households, out of which 32.6% had children under the age of 18 living within them, 47.0% [[Marriage|married couples]] living together, 13.0% had a female householder with no husband present, and 35.2% were non-families. 26.0% of all households were made up of individuals, and 7.3% had someone living alone who was 65 years of age or older. The average household size was 2.71 and the average family size was 3.31.

In the county, the population was spread out, with 24.6% under the age of 18, 9.6% from 18 to 24, 33.9% from 25 to 44, 21.7% from 45 to 64, and 10.2% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 96.60 males. For every 100 females age 18 and over, there were 94.00 males.

The median income for a household in the county was $55,946, and the median income for a family was $65,857 (these figures had risen to $66,430 and $81,341 respectively as of a 2007 estimate<ref>{{Cite web|url=https://factfinder.census.gov/faces/nav/jsf/pages/community_facts.xhtml|archive-date=February 11, 2020|archive-url=https://archive.today/20200211175836/http://factfinder.census.gov/servlet/ACSSAFFFacts?_event=ChangeGeoContext&geo_id=05000US06001&_geoContext=&_street=&_county=alameda&_cityTown=alameda&_state=04000US06&_zip=&_lang=en&_sse=on&ActiveGeoDiv=&_useEV=&pctxt=fph&pgsl=010&_submenuId=factsheet_1&ds_name=ACS_2007_3YR_SAFF&_ci_nbr=null&qr_name=null&reg=null:null&_keyword=&_industry=|url-status=dead|title=American FactFinder - Community Facts > Alameda County, California}}</ref>). Males had a median income of $47,425 versus $36,921 for females. The [[per capita income]] for the county was $26,680. About 7.7% of families and 11.0% of the population were below the [[poverty line]], including 13.5% of those under age 18 and 8.1% of those age 65 or over.

In 2000, the largest denominational group was the [[Catholic]]s (with 306,437 adherents).<ref name="thearda">{{cite web |url=http://www.thearda.com/mapsReports/reports/counties/06001_2000.asp|title=County Membership Reports |access-date=August 22, 2011 |work= thearda.com | archive-url= https://web.archive.org/web/20110710230449/http://www.thearda.com/mapsReports/reports/counties/06001_2000.asp| archive-date= July 10, 2011 | url-status= live}}</ref> The largest religious bodies were the [[Catholic Church]] (with 306,437 members) and [[Judaism]] (with 32,500 members).<ref name="thearda" />

===2019 United States Census Bureau American Community Survey estimates===
{| class="cx-linter-tag"
|-
| valign="top" |
{{Pie chart
 | thumb   = left
 | caption = '''Racial Makeup of Alameda County (2019)'''<ref name=CensusACS2019 />
 | label1 = White alone
 | value1 = 38.84| color2=#36A
 | label2 = Black alone
 | value2 = 10.66| color1=#6A5
 | label3 = Native American alone
 | value3 = 0.76| color3=#FF33AC
 | label4 = Asian Alone
 | value4 = 31.13| color4=#1A9
 | label5 = Pacific Islander Alone
 | value5 = 0.81| color5=#E17720
 | label6 = Other race alone
 | value6 = 11.45| color6=#F0FF00
 | label7 = Two or more races
 | value7 = 6.35| color7=#64ECDF
 }}
| valign="top" |
{{Pie chart
 | caption= '''Racial Makeup of Alameda County excluding Hispanics from racial categories (2019)'''<ref name=CensusACS2019 /><br /> ''NH=Non-Hispanic''
 | thumb   = right
 | label1 = White alone
 | value1 = 30.43| color2=#36A
 | label2 = Black alone
 | value2 = 10.33| color1=#6A5
 | label3 = Native American alone
 | value3 = 0.33| color3=#FF33AC
 | label4 = Asian Alone
 | value4 = 30.93| color4=#1A9
 | label5 = Pacific Islander Alone
 | value5 = 0.77| color5=#E17720
 | label6 = Other race alone
 | value6 = 0.47| color6=#F0FF00
 | label7 = Two or more races
 | value7 = 4.41| color7=#64ECDF
 | label8 = Hispanic Any Race
 | value8 = 22.32| color8=#9400D3
 }}
| valign="top" |
{{Pie chart
 | thumb   = right
 | caption = '''Racial Makeup of Hispanics in Alameda County''' (2019)<ref name=CensusACS2019 />
 | label1 = White alone
 | value1 = 37.69| color2=#36A
 | label2 = Black alone
 | value2 = 1.48| color1=#6A5
 | label3 = Native American alone
 | value3 = 1.91 | color3=#FF33AC
 | label4 = Asian alone
 | value4 = 0.89 | color4=#1A9
 | label5 = Pacific Islander alone
 | value5 = 0.17| color5=#E17720
 | label6 = Other race alone
 | value6 = 49.16 | color6=#F0FF00
 | label7 = Two or more races
 | value7 = 8.69 | color7=#64ECDF
 }}
|}

According to 2019 US Census Bureau estimates, Alameda County's population was 38.8% [[White American|White]] (30.4% [[Non-Hispanic White]] and 8.4% [[Hispanic White]]), 10.7% Black or [[African American]], 31.1% [[Asian American|Asian]], 11.5% Some Other Race, 0.8% [[Native Americans in the United States|Native American]] and [[Alaskan Native]], 0.8% [[Pacific Islander]] and 6.4% from [[Multiracial American|two or more races]].<ref name=CensusACS2019>{{cite web|url=https://data.census.gov/cedsci/table?q=B03002&g=0500000US06001&tid=ACSDT1Y2019.B03002&hidePreview=true|title=B03002 HISPANIC OR LATINO ORIGIN BY RACE – Alameda County, California – 2019 American Community Survey 1-Year Estimates|date=July 1, 2019 |publisher=[[U.S. Census Bureau]] |access-date=January 30, 2021}}</ref>

The White population continues to remain the largest racial category in Alameda County and includes the 37.7% of Hispanics who self-identify as White. The remainder of Hispanics self-identify as Other Race (49.2%), Multiracial (8.7%), American Indian and Alaskan Native (1.9%), Black (1.5%), Asian (0.9%), and Hawaiian and Pacific Islander (0.2%).<ref name=CensusACS2019 />

The Black population continues to decline and at 10.7% (including [[Black Hispanics]])<ref name=CensusACS2019 /> is below the national average of 12.8% (including Black Hispanics).<ref>{{cite web|url=https://data.census.gov/cedsci/table?g=0100000US&tid=ACSDT1Y2019.B03002&hidePreview=true|title=B03002 HISPANIC OR LATINO ORIGIN BY RACE – United States – 2019 American Community Survey 1-Year Estimates|date=July 1, 2019 |publisher=[[U.S. Census Bureau]] |access-date=January 28, 2021}}</ref>  The Black population peaked in the 1980 Census at 18.4%.<ref>{{cite web|title=Alameda County Decennial Census data   |website=Bay Area Census|url= http://www.bayareacensus.ca.gov/counties/AlamedaCounty70.htm |access-date=January 28, 2020}}</ref> Alameda county has the 2nd highest percentage of Black residents in California after [[Solano County]] at 13.4%.

If Hispanics are treated as a separate category from race, Alameda County's population was 30.4% [[White American|White]], 30.9% [[Asian American|Asian]], 22.3% [[Hispanic and Latino Americans|Hispanic-Latino]], 10.3% Black or [[African American]], 0.5% Some Other Race, 0.3% [[Native Americans in the United States|Native American]] and [[Alaskan Native]], 0.8% [[Pacific Islander]] and 4.4% from [[Multiracial American|two or more races]].<ref name=CensusACS2018>{{cite web|url=https://data.census.gov/cedsci/table?q=&tid=ACSDT1Y2018.B03002&lastDisplayedRow=20&hidePreview=true&vintage=2018&layer=county&cid=B03002_001E&g=0500000US06001|title=B03002 HISPANIC OR LATINO ORIGIN BY RACE – Alameda County, California – 2018 American Community Survey 1-Year Estimates|date=July 1, 2018 |publisher=[[U.S. Census Bureau]] |access-date=January 28, 2020}}</ref>

Asian Americans are now the largest racial/ethnic group at 30.9% (excluding Asian Hispanics).<ref name=CensusACS2019 />

White Non-Hispanic Americans are the largest minority group at 30.4% of the population.<ref name=CensusACS2019 />

By ethnicity, 22.3% of the total population is [[Hispanic and Latino Americans|Hispanic-Latino]] (of any race) and 77.7% is Non-Hispanic (of any race). If treated as a category separate from race, Hispanics are the third largest minority group in Alameda County.<ref name=CensusACS2019 />

The largest ancestry group of Hispanics in Alameda County (2018) are of [[Mexican American|Mexican]] descent (72.9% of Hispanics) followed by [[Salvadoran Americans|Salvadoran]] descent (5.5% of Hispanics), [[Guatemalan American|Guatemalan]] descent (3.9%), [[Puerto Ricans|Puerto Rican]] descent (3.4%), [[Spanish Americans|Spaniard]] descent (2.0%), [[Nicaraguan Americans|Nicaraguan]] descent (1.7%), [[Peruvian Americans|Peruvian]] descent (1.4%), [[Cuban Americans|Cuban]] descent (1.2%), [[Colombian Americans|Colombian]] descent (1.1%), and those of other Hispanic ethnicity or of mixed Hispanic ethnicity (6.9%).<ref name=CensusACS2018-B03001>{{cite web|url=https://data.census.gov/cedsci/table?q=mexican&tid=ACSDT1Y2018.B03001&lastDisplayedRow=30&hidePreview=true&vintage=2018&layer=state%3DS0506_C01_001E&y=2018&table=B03001&mode=&t=&g=0500000US06001|title=B03001 HISPANIC OR LATINO ORIGIN BY SPECIFIC ORIGIN – Alameda County, California – 2018 American Community Survey 1-Year Estimates|date=July 1, 2018 |publisher=[[U.S. Census Bureau]] |access-date=January 28, 2020}}</ref>