Editing Union County, New Jersey (section)

==Demographics==
{{US Census population
|1860= 27780
|1870= 41859
|1880= 55571
|1890= 72467
|1900= 99353
|1910=140197
|1920=200157
|1930=305209
|1940=328344
|1950=398138
|1960=504255
|1970=543116
|1980=504094
|1990=493819
|2000=522541
|2010=536499
|2020=575345
| estyear=2024
| estimate=594160
| estref=<ref name=Census2020/><ref name=PopEst>[https://www2.census.gov/programs-surveys/popest/tables/2020-2024/counties/totals/co-est2023-pop-34.xlsx Annual Estimates of the Resident Population for Counties in New Jersey: April 1, 2020 to July 1, 2024], [[United States Census Bureau]], released March 2024. Accessed March 26, 2025.</ref>
|footnote=Historical sources: 1790–1990<ref>Forstall, Richard L. [https://books.google.com/books?id=sezaSI_LPA8C&pg=PA108 ''Population of states and counties of the United States: 1790 to 1990 from the Twenty-one Decennial Censuses''], pp. 108–109. [[United States Census Bureau]], March 1996. {{ISBN|9780934213486}}. Accessed October 6, 2013.</ref><br />1970–2010<ref name=CPH232>[https://www.census.gov/prod/cen2010/cph-2-32.pdf#page=32 ''New Jersey: 2010 - Population and Housing Unit Counts; 2010 Census of Population and Housing''], p. 6, CPH-2-32. [[United States Census Bureau]], August 2012. Accessed August 29, 2016.</ref> 2000<ref name=Census2000>[https://archive.today/20200212083029/http://factfinder.census.gov/bkmk/table/1.0/en/DEC/00_SF1/DP1/0500000US34039 DP-1 – Profile of General Demographic Characteristics: 2000; Census 2000 Summary File 1 (SF 1) 100-Percent Data for Union County, New Jersey], [[United States Census Bureau]]. Accessed September 30, 2013.</ref><br />2010<ref name=Census2010>[https://archive.today/20200212092732/http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_DP/DPDP1/0500000US34039 DP1 – Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data for Union County, New Jersey], [[United States Census Bureau]]. Accessed January 21, 2013.</ref> 2000–2010<ref name=Census2010Press>[https://www.census.gov/newsroom/releases/archives/2010_census/cb11-cn15.html U.S. Census Bureau Delivers New Jersey's 2010 Census Population Totals], [[United States Census Bureau]], February 3, 2011. Accessed February 5, 2011.</ref> 2010-2020<ref name=Census2020>[https://www.census.gov/quickfacts/fact/table/unioncountynewjersey QuickFacts Union County, New Jersey; New Jersey], [[United States Census Bureau]]. Accessed March 26, 2025.</ref><ref name=LWD2020>[https://www.nj.gov/labor/labormarketinformation/assets/PDFs/census/2020/2020%20pl94%20Tables/2020_Mun/MCD%200_All.pdf Total Population: Census 2010 - Census 2020 New Jersey Municipalities], [[New Jersey Department of Labor and Workforce Development]]. Accessed December 1, 2022.</ref>
}}

Union County is ethnically diverse. [[Berkeley Heights, New Jersey|Berkeley Heights]], [[Clark, New Jersey|Clark]], [[Roselle Park, New Jersey|Roselle Park]], [[Cranford, New Jersey|Cranford]], [[Kenilworth, New Jersey|Kenilworth]], [[Linden, New Jersey|Linden]], [[New Providence, New Jersey|New Providence]], [[Scotch Plains, New Jersey|Scotch Plains]], [[Springfield Township, Union County, New Jersey|Springfield]], [[Summit, New Jersey|Summit]], [[Union Township, Union County, New Jersey|Union]] and [[Westfield, New Jersey|Westfield]] have high percentages of [[Italian American]] residents. [[Elizabeth, New Jersey|Elizabeth]], [[Plainfield, New Jersey|Plainfield]], [[Rahway, New Jersey|Rahway]], [[Roselle, New Jersey|Roselle]] and [[Union Township, Union County, New Jersey|Union]] all have large [[African American]] communities. [[Roselle Park, New Jersey|Roselle Park]] has a notably large [[Indian American]] community, while [[Roselle Park, New Jersey|Roselle Park]], Roselle, [[Linden, New Jersey|Linden]], [[Rahway, New Jersey|Rahway]], [[Plainfield, New Jersey|Plainfield]] and particularly [[Elizabeth, New Jersey|Elizabeth]] have fast-growing [[Hispanic]] and [[Portuguese people|Portuguese]] populations.{{citation needed|date=October 2018}}

The county's [[Jewish]] population was 35,000 as of 2004, with notable communities located in [[Cranford, New Jersey|Cranford]], [[Elizabeth, New Jersey|Elizabeth]], [[Hillside, New Jersey|Hillside]], [[Linden, New Jersey|Linden]], [[Scotch Plains, New Jersey|Scotch Plains]], [[Springfield Township, Union County, New Jersey|Springfield]], [[Union Township, Union County, New Jersey|Union]], and [[Westfield, New Jersey|Westfield]].<ref>[http://www.jewishvirtuallibrary.org/jsource/judaica/ejud_0002_0020_0_20199.html Union County], [[Jewish Virtual Library]]. Accessed November 24, 2014. "Union County, county in N.E. New Jersey. Of Union County's 532,000 residents (2004 census), about 35,000 were Jews. Major Jewish communities are in Elizabeth-Hillside, Westfield, Scotch Plains, Springfield, Union, Cranford, and Linden."</ref>

=== 2020 census ===
{| class="wikitable" style="text-align:center;"
|+'''Union County, New Jersey – 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 – Union County, New Jersey |url=https://data.census.gov/table?g=0500000US34039&tid=DECENNIALSF12000.P004|website=[[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) - Union County, New Jersey|url=https://data.census.gov/cedsci/table?q=0500000US34039&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) - Union County, New Jersey|url=https://data.census.gov/cedsci/table?q=0500000US34039&tid=DECENNIALPL2020.P2|website=[[United States Census Bureau]]}}</ref>
!% 2000
!% 2010
!{{partial|% 2020}}
|-
|[[Non-Hispanic or Latino whites|White]] alone (NH)
|283,345
|243,312
|style='background: #ffffe6; |211,245
|54.22%
|45.35%
|style='background: #ffffe6; |36.72%
|-
|[[Non-Hispanic or Latino African Americans|Black or African American]] alone (NH)
|104,926
|111,705
|style='background: #ffffe6; |112,261
|20.08%
|20.82%
|style='background: #ffffe6; |19.51%
|-
|[[Native Americans in the United States|Native American]] or [[Alaska Native]] alone (NH)
|547
|546
|style='background: #ffffe6; |552
|0.10%
|0.10%
|style='background: #ffffe6; |0.10%
|-
|[[Asian Americans|Asian]] alone (NH)
|19,789
|24,496
|style='background: #ffffe6; |31,963
|3.79%
|4.57%
|style='background: #ffffe6; |5.56%
|-
|[[Native Hawaiian]] or [[Pacific Islander Americans|Pacific Islander]] alone (NH)
|121
|107
|style='background: #ffffe6; |78
|0.02%
|0.02%
|style='background: #ffffe6; |0.01%
|-
|[[Race and ethnicity in the United States census|Other race]] alone (NH)
|1,462
|2,279
|style='background: #ffffe6; |6,190
|0.28%
|0.42%
|style='background: #ffffe6; |1.08%
|-
|[[Multiracial Americans|Mixed race or Multiracial]] (NH)
|9,340
|7,350
|style='background: #ffffe6; |17,537
|1.79%
|1.37%
|style='background: #ffffe6; |3.05%
|-
|[[Hispanic and Latino Americans|Hispanic or Latino]] (any race)
|103,011
|146,704
|style='background: #ffffe6; |195,519
|19.71%
|27.34%
|style='background: #ffffe6; |33.98%
|-
|'''Total'''
|'''522,541'''
|'''536,499'''
|style='background: #ffffe6; |'''575,345'''
|'''100.00%'''
|'''100.00%'''
|style='background: #ffffe6; |'''100.00%'''
|}

===2010 census===
The [[2010 United States census]] counted 536,499 people, 188,118 households, and 134,692 families in the county. The population density was {{convert|5,216.1|PD/sqmi|PD/km2|sp=us|adj=off}}. There were 199,489 housing units at an average density of {{convert|1,939.5|/sqmi|/km2|sp=us|adj=off}}. The racial makeup was 61.33% (329,052) [[White (U.S. census)|White]], 22.05% (118,313) [[Black (U.S. census)|Black or African American]], 0.39% (2,080) [[Native American (U.S. census)|Native American]], 4.63% (24,839) [[Asian (U.S. census)|Asian]], 0.03% (163) [[Pacific Islander (U.S. census)|Pacific Islander]], 8.48% (45,496) from [[Race and ethnicity in the United States census#Race|other races]], and 3.09% (16,556) from two or more races. [[Hispanic (U.S. census)|Hispanic or Latino]] people of any race were 27.34% (146,704) of the population.<ref name=Census2010/>

Of the 188,118 households, 34.4% had children under the age of 18; 50.1% were married couples living together; 15.6% had a female householder with no husband present and 28.4% were non-families. Of all households, 23.6% were made up of individuals and 9.7% had someone living alone who was 65 years of age or older. The average household size was 2.82 and the average family size was 3.32.<ref name=Census2010/>

24.5% of the population were under the age of 18, 8.6% from 18 to 24, 27.5% from 25 to 44, 26.8% from 45 to 64, and 12.6% who were 65 years of age or older. The median age was 38 years. For every 100 females, the population had 94 males. For every 100 females ages 18 and older there were 90.7 males.<ref name=Census2010/>