Editing Delaware County, Ohio (section)

==Demographics==
{{US Census population
|1810= 2000
|1820= 7639
|1830= 11504
|1840= 22060
|1850= 21817
|1860= 23902
|1870= 25175
|1880= 27381
|1890= 27189
|1900= 26401
|1910= 27182
|1920= 26013
|1930= 26016
|1940= 26780
|1950= 30278
|1960= 36107
|1970= 42908
|1980= 53840
|1990= 66929
|2000= 109989
|2010= 174214
|2020= 214124
|estyear=2022
|estimate=226296
|estref=<ref name="USCensusEst2022">{{cite web|url=https://www.census.gov/data/tables/time-series/demo/popest/2020s-counties-total.html|title=Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2022|access-date=August 31, 2023}}</ref>
|align-fn=center
|footnote=U.S. Decennial Census<ref>{{cite web|url=https://www.census.gov/programs-surveys/decennial-census.html|title=U.S. Decennial Census|publisher=United States Census Bureau|access-date=February 7, 2015}}</ref><br />1790-1960<ref>{{cite web|url=http://mapserver.lib.virginia.edu|title=Historical Census Browser|publisher=University of Virginia Library|access-date=February 7, 2015}}</ref> 1900-1990<ref>{{cite web|url=https://www.census.gov/population/cencounts/oh190090.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=February 7, 2015}}</ref><br />1990-2000<ref>{{cite web|url=https://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf |archive-url=https://web.archive.org/web/20100327165705/http://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf |archive-date=March 27, 2010 |url-status=live|title=Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000|publisher=United States Census Bureau|date=April 2, 2001|access-date=February 7, 2015}}</ref> 2010-2020<ref>{{Cite web|url=https://www.census.gov/library/visualizations/interactive/2020-population-and-housing-state-data.html|title=2020 Population and Housing State Data|website=Census.gov}}</ref>
}}

===2000 census===
As of the [[census]] of 2000, there were 109,989 people, 39,674 households, and 30,668 families living in the county. The [[population density]] is {{convert|249|/mi2|/km2|disp=preunit|people&nbsp;|people|}}. There were 42,374 housing units at an average density of {{convert|96|/mi2|/km2|disp=preunit|units&nbsp;|units|}}. The racial makeup of the county was 94.25% [[Race (U.S. census)|White]], 2.52% [[Race (U.S. census)|Black]] or [[Race (U.S. census)|African American]], 0.14% [[Race (U.S. census)|Native American]], 1.54% [[Race (U.S. census)|Asian]], 0.03% [[Race (U.S. census)|Pacific Islander]], 0.38% from [[race (U.S. census)|other races]], and 1.14% from two or more races. [[Race (U.S. census)|Hispanic]] or [[Race (U.S. census)|Latino]] of any race were 1.01% of the population. 26.8% were of [[German Americans|German]], 11.7% [[Irish Americans|Irish]], 11.3% [[English Americans|English]], 10.7% [[American ancestry|American]] and 6.9% [[Italian Americans|Italian]] ancestry according to [[2000 United States Census|2000 census]].

There were 39,674 households, out of which 40.10% had children under the age of 18 living with them, 67.70% were [[Marriage|married couples]] living together, 6.70% had a female householder with no husband present, and 22.70% were non-families. 18.10% of all households were made up of individuals, and 5.30% had someone living alone who was 65 years of age or older. The average household size was 2.70 and the average family size was 3.09.

In the county, the population was spread out, with 28.20% under the age of 18, 7.60% from 18 to 24, 32.60% from 25 to 44, 23.30% from 45 to 64, and 8.20% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 98.00 males. For every 100 females age 18 and over, there were 94.90 males.

The median income for a household in the county was $67,258, and the median income for a family was $76,453. Males had a median income of $51,428 versus $33,041 for females. The [[per capita income]] for the county was $31,600. About 2.90% of families and 3.80% of the population were below the [[poverty line]], including 4.40% of those under the age of 18 and 4.80% of those 65 and older.

By 2007, the median income for a household and for a family had risen to $80,526 and $94,099 respectively.

According to the [[United States Census Bureau]], Delaware County is the 21st fastest growing county in the United States.{{citation needed|date=September 2012}}

===2010 census===
As of the [[2010 United States census]], there were 174,214 people, 62,760 households, and 47,977 families living in the county.<ref name="census-dp1">{{cite web
  |url=http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_DP/DPDP1/0500000US39041
  |title=DP-1 Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data
  |access-date=December 27, 2015
|publisher=[[United States Census Bureau]]
  |archive-url=https://archive.today/20200213022751/http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_DP/DPDP1/0500000US39041
  |archive-date=February 13, 2020
|url-status=dead
  }}</ref> The population density was {{convert|393.2|PD/sqmi}}. There were 66,378 housing units at an average density of {{convert|149.8|/mi2|/km2|disp=preunit|units&nbsp;|units|}}.<ref name="census-density">{{cite web
  |url=http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_SF1/GCTPH1.CY07/0500000US39041
  |access-date=December 27, 2015
|title=Population, Housing Units, Area, and Density: 2010 - County
  |publisher=[[United States Census Bureau]]
  |archive-url=https://archive.today/20200213185017/http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_SF1/GCTPH1.CY07/0500000US39041
  |archive-date=February 13, 2020
|url-status=dead
  }}</ref> The racial makeup of the county was 89.7% white, 4.3% Asian, 3.4% black or African American, 0.1% American Indian, 0.6% from other races, and 1.8% from two or more races. Those of Hispanic or Latino origin made up 2.1% of the population.<ref name="census-dp1"/> In terms of ancestry, 34.2% were [[German Americans|German]], 16.3% were [[Irish Americans|Irish]], 14.0% were [[English Americans|English]], 8.1% were [[Italian Americans|Italian]], and 5.7% were [[American ancestry|American]].<ref name="census-dp2">{{cite web
  |url=http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP02/0500000US39041
  |title=DP02 SELECTED SOCIAL CHARACTERISTICS IN THE UNITED STATES – 2006-2010 American Community Survey 5-Year Estimates
  |access-date=December 27, 2015
|publisher=[[United States Census Bureau]]
  |archive-url=https://archive.today/20200213030957/http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP02/0500000US39041
  |archive-date=February 13, 2020
|url-status=dead
  }}</ref>

Of the 62,760 households, 41.9% had children under the age of 18 living with them, 65.8% were married couples living together, 7.3% had a female householder with no husband present, 23.6% were non-families, and 19.0% of all households were made up of individuals. The average household size was 2.74 and the average family size was 3.16. The median age was 37.4 years.<ref name="census-dp1"/>

The median income for a household in the county was $87,908 and the median income for a family was $101,698. Males had a median income of $70,949 versus $48,913 for females. The per capita income for the county was $40,682. About 3.4% of families and 4.6% of the population were below the [[poverty line]], including 4.8% of those under age 18 and 5.4% of those age 65 or over.<ref name="census-dp3">{{cite web
  |url=http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP03/0500000US39041
  |title=DP03 SELECTED ECONOMIC CHARACTERISTICS – 2006-2010 American Community Survey 5-Year Estimates
  |access-date=December 27, 2015
|publisher=[[United States Census Bureau]]
  |archive-url=https://archive.today/20200213021120/http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP03/0500000US39041
  |archive-date=February 13, 2020
|url-status=dead
  }}</ref>

===2020 census===
As of the [[2020 United States census]], there were 214,124 people, 77,713 households living in the county.<ref name="data.census.gov">{{cite web
  |url=https://data.census.gov/table/DECENNIALDP2020.DP1?g=040XX00US39_050XX00US39041&d=DEC%20Demographic%20Profile
  |title=DP-1 Profile of General Population and Housing Characteristics: 2020 Demographic Profile Data
  |access-date=February 24, 2024
|publisher=[[United States Census Bureau]]
  }}</ref> 
The racial makeup of the county was 80.9% white, 8.5% Asian, 5.6% from two or more races, 3.7% black or African American, Hispanic or Latino origin 3.3%,  1.1% from other races, 0.2% American Indian.<ref name="data.census.gov"/>