View source for Yakima County, Washington

==Demographics==
{{US Census population
|1870= 432
|1880= 2811
|1890= 4429
|1900= 13462
|1910= 41709
|1920= 63710
|1930= 77402
|1940= 99019
|1950= 135723
|1960= 145112
|1970= 144971
|1980= 172508
|1990= 188823
|2000= 222581
|2010= 243231
|2020= 256728
|estyear=2025
|estimate=259185
|estref=<ref name="USCensusEst2025">{{cite web|url=https://www.census.gov/data/tables/time-series/demo/popest/2020s-counties-total.html|title=County Population Totals and Components of Change: 2020-2025|publisher=United States Census Bureau|access-date=April 10, 2026}}</ref> {{increase}}
|align-fn=center
|footnote=U.S. Decennial Census<ref>{{Cite web |title=U.S. Decennial Census |url=https://www.census.gov/programs-surveys/decennial-census.html |access-date=January 8, 2014 |publisher=United States Census Bureau}}</ref><br/>1790–1960<ref>{{Cite web |title=Historical Census Browser |url=http://mapserver.lib.virginia.edu |access-date=January 8, 2014 |publisher=University of Virginia Library}}</ref> 1900–1990<ref>{{Cite web |title=Population of Counties by Decennial Census: 1900 to 1990 |url=https://www.census.gov/population/cencounts/wa190090.txt |access-date=January 8, 2014 |publisher=United States Census Bureau}}</ref><br/>1990–2000<ref>{{Cite web |title=Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000 |url=https://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf |url-status=dead |archive-url=https://web.archive.org/web/20150226035610/http://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf |archive-date=February 26, 2015 |access-date=January 8, 2014 |publisher=United States Census Bureau}}</ref> 2010–2020<ref name="QF" />
| align = right
}}

===2020 census===

As of the [[2020 United States census|2020 census]], the county had a population of 256,728. Of the residents, 28.2% were under the age of 18 and 14.6% were 65 years of age or older; the median age was 34.2 years. For every 100 females there were 99.5 males, and for every 100 females age 18 and over there were 97.6 males. 69.6% of residents lived in urban areas and 30.4% lived in rural areas.<ref name="Census2020DHC">{{cite web|title=2020 Decennial Census Demographic and Housing Characteristics (DHC)|url=https://api.census.gov/data/2020/dec/dhc?get=NAME%2CP2_002N%2CP2_003N&for=county%3A077&in=state%3A53|publisher=United States Census Bureau|year=2023|access-date=2025-12-08|df=mdy}}</ref><ref name="Census2020DP">{{cite web|title=2020 Decennial Census Demographic Profile (DP1)|url=https://api.census.gov/data/2020/dec/dp?get=NAME%2CDP1_0021P%2CDP1_0024P%2CDP1_0025C%2CDP1_0049C%2CDP1_0045C%2CDP1_0069C%2CDP1_0073C%2CDP1_0125P%2CDP1_0126P%2CDP1_0129P%2CDP1_0138P%2CDP1_0139P%2CDP1_0141P%2CDP1_0142P%2CDP1_0143P%2CDP1_0145P%2CDP1_0146P%2CDP1_0147C%2CDP1_0148C%2CDP1_0149C%2CDP1_0156C%2CDP1_0157C%2CDP1_0158C%2CDP1_0159P%2CDP1_0160P&for=county%3A077&in=state%3A53|publisher=United States Census Bureau|year=2021|access-date=2025-12-08|df=mdy}}</ref><ref name="Census2020PL">{{cite web|title=2020 Decennial Census Redistricting Data (Public Law 94-171)|url=https://api.census.gov/data/2020/dec/pl?get=NAME%2CP1_001N%2CP1_003N%2CP1_004N%2CP1_005N%2CP1_006N%2CP1_007N%2CP1_008N%2CP1_009N%2CP2_001N%2CP2_002N%2CH1_001N%2CH1_002N&for=county%3A077&in=state%3A53|publisher=United States Census Bureau|year=2021|access-date=2025-12-08|df=mdy}}</ref>

{| class="wikitable" style="text-align:center;"
|+'''Yakima County, Washington – 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 – Yakima County, Washington|url=https://data.census.gov/table/DECENNIALSF12000.P004?q=P004:+HISPANIC+OR+LATINO,+AND+NOT+HISPANIC+OR+LATINO+BY+RACE+[73]&g=050XX00US53077|publisher=[[United States Census Bureau]] |access-date=February 1, 2026|df=mdy }}</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) - Yakima County, Washington|url=https://data.census.gov/table/DECENNIALPL2010.P2?q=p2&g=050XX00US53077|website=[[United States Census Bureau]] |access-date=February 1, 2026|df=mdy }}</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) - Yakima County, Washington|url=https://data.census.gov/table/DECENNIALPL2020.P2?q=p2&g=050XX00US53077|website=[[United States Census Bureau]] |access-date=February 1, 2026|df=mdy }}</ref>
!% 2000
!% 2010
!{{partial|% 2020}}
|-
|[[Non-Hispanic or Latino whites|White]] alone (NH)
|125,733
|116,024
|style='background: #ffffe6; |103,578
|56.49%
|47.70%
|style='background: #ffffe6; |40.35%
|-
|[[Non-Hispanic or Latino African Americans|Black or African American]] alone (NH)
|1,842
|1,743
|style='background: #ffffe6; |1,718
|0.83%
|0.72%
|style='background: #ffffe6; |0.67%
|-
|[[Native Americans in the United States|Native American]] or [[Alaska Native]] alone (NH)
|8,947
|9,072
|style='background: #ffffe6; |9,357
|4.02%
|3.73%
|style='background: #ffffe6; |3.64%
|-
|[[Asian Americans|Asian]] alone (NH)
|1,957
|2,359
|style='background: #ffffe6; |2,785
|0.88%
|0.97%
|style='background: #ffffe6; |1.08%
|-
|[[Pacific Islander Americans|Pacific Islander]] alone (NH)
|109
|142
|style='background: #ffffe6; |221
|0.05%
|0.06%
|style='background: #ffffe6; |0.09%
|-
|[[Race and ethnicity in the United States census|Other race]] alone (NH)
|215
|331
|style='background: #ffffe6; |1,045
|0.10%
|0.14%
|style='background: #ffffe6; |0.41%
|-
|[[Multiracial Americans|Mixed race or Multiracial]] (NH)
|3,873
|4,090
|style='background: #ffffe6; |7,975
|1.74%
|1.68%
|style='background: #ffffe6; |3.11%
|-
|[[Hispanic and Latino Americans|Hispanic or Latino]] (any race)
|79,905
|109,470
|style='background: #ffffe6; |130,049
|35.89%
|45.01%
|style='background: #ffffe6; |50.66%
|-
|'''Total'''
|'''222,581'''
|'''243,231'''
|style='background: #ffffe6; |'''256,728'''
|'''100.00%'''
|'''100.00%'''
|style='background: #ffffe6; |'''100.00%'''
|}

The racial makeup of the county was 48.5% White, 0.8% [[African Americans|Black or African American]], 5.1% [[Native Americans in the United States|American Indian and Alaska Native]], 1.2% [[Asian Americans|Asian]], 0.1% [[Native Hawaiians|Native Hawaiian]] and [[Pacific Islander]], 29.2% from some other race, and 15.1% from [[Multiracial Americans|two or more races]]. [[Hispanic and Latino Americans|Hispanic or Latino]] residents of any race comprised 50.7% of the population.<ref name="Census2020PL" />

There were 85,882 households in the county, of which 39.5% had children under the age of 18 living with them and 25.7% had a female householder with no spouse or partner present. About 22.0% of all households were made up of individuals and 10.2% had someone living alone who was 65 years of age or older.<ref name="Census2020DP" />

There were 90,504 housing units, of which 5.1% were vacant. Among occupied housing units, 62.5% were owner-occupied and 37.5% were renter-occupied. The homeowner vacancy rate was 0.9% and the rental vacancy rate was 4.0%.<ref name="Census2020DP" />

===2010 census===
As of the [[2010 United States census|2010 census]], there were 243,231 people, 80,592 households, and 58,790 families living in the county.<ref name="DP1">{{Cite web |title=Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data |url=http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_DP/DPDP1/0500000US53077 |url-status=dead |archive-url=https://archive.today/20200213033721/http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_DP/DPDP1/0500000US53077 |archive-date=February 13, 2020 |access-date=March 6, 2016 |publisher=United States Census Bureau}}</ref> The population density was {{convert|56.6|/mi2|/km2|disp=preunit|people&nbsp;|people|}}. There were 85,474 housing units at an average density of {{convert|19.9|/mi2|/km2|disp=preunit|units&nbsp;|units|}}.<ref>{{Cite web |title=Population, Housing Units, Area, and Density: 2010 - County |url=http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_SF1/GCTPH1.CY07/0500000US53077 |url-status=dead |archive-url=https://archive.today/20200213183503/http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_SF1/GCTPH1.CY07/0500000US53077 |archive-date=February 13, 2020 |access-date=March 6, 2016 |publisher=United States Census Bureau}}</ref> The racial makeup of the county was 63.7% White, 4.3% American Indian, 1.1% Asian, 1.0% Black or African American, 0.1% Pacific islander, 26.1% from other races, and 3.7% from two or more races. Those of Hispanic or Latino origin made up 45.0% of the population.<ref name=DP1/> In terms of ethnicity, 15.8% reported [[Germans|German]], 8.0% [[English people|English]], 7.3% [[Irish people|Irish]], and 3.6% [[Americans|American]] ancestry.<ref>{{Cite web |title=Selected Social Characteristics in the United States – 2006-2010 American Community Survey 5-Year Estimates |url=http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP02/0500000US53077 |url-status=dead |archive-url=https://archive.today/20200213022221/http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP02/0500000US53077 |archive-date=February 13, 2020 |access-date=March 6, 2016 |publisher=United States Census Bureau}}</ref>

Of the 80,592 households, 42.1% had children under the age of 18 living with them, 51.4% were married couples living together, 14.7% had a female householder with no husband present, 27.1% were non-families, and 21.6% of all households were made up of individuals. The average household size was 2.97 and the average family size was 3.46. The median age was 32.2 years.<ref name=DP1/>

The median income for a household in the county was $42,877 and the median income for a family was $48,004. Males had a median income of $37,029 versus $29,824 for females. The per capita income for the county was $19,325. About 16.8% of families and 21.8% of the population were below the [[poverty line]], including 31.9% of those under age 18 and 11.9% of those age 65 or over.<ref>{{Cite web |title=Selected Economic Characteristics – 2006-2010 American Community Survey 5-Year Estimates |url=http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP03/0500000US53077 |url-status=dead |archive-url=https://archive.today/20200213011151/http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP03/0500000US53077 |archive-date=February 13, 2020 |access-date=March 6, 2016 |publisher=United States Census Bureau}}</ref>

===2000 census===
As of the [[2000 United States census|2000 census]], there were 222,581 people, 73,993 households, and 54,606 families living in the county. The [[population density]] was {{convert|52|/mi2|/km2|disp=preunit|people&nbsp;|people}}. There were 79,174 housing units at an average density of {{convert|18|/mi2|/km2|disp=preunit|units&nbsp;|units|}}. The racial makeup of the county was 65.60% [[Race (United States Census)|White]], 0.97% [[Race (United States Census)|Black]] or [[Race (United States Census)|African American]], 4.48% [[Race (United States Census)|Native American]], 0.95% [[Race (United States Census)|Asian]], 0.09% [[Race (United States Census)|Pacific Islander]], 24.43% from [[Race (United States Census)|other races]], and 3.48% from two or more races. 35.90% of the population were [[Race (United States Census)|Hispanic]] or [[Race (United States Census)|Latino]] of any race. 13.2% were of [[German people|German]], 6.4% [[United States]] or American, 5.9% [[English people|English]] and 5.4% [[Irish American|Irish]] ancestry.

There were 73,993 households, out of which 39.7% had children under the age of 18 living with them, 55.8% were [[Marriage|married couples]] living together, 12.5% had a female householder with no husband present, and 26.2% were non-families. 21.5% of all households were made up of individuals, and 9.6% had someone living alone who was 65 years of age or older. The average household size was 2.96 and the average family size was 3.44.

In the county, 31.8% of the population was under the age of 18, 9.8% was from 18 to 24, 27.5% from 25 to 44, 19.7% from 45 to 64, and 11.2% was 65 years of age or older. The median age was 31 years. For every 100 females there were 99.6 males. For every 100 females age 18 and over, there were 97.1 males.

The median income for a household in the county was $34,828, and the median income for a family was $39,746. Males had a median income of $31,620 versus $24,541 for females. The [[per capita income]] for the county was $15,606. About 14.8% of families and 19.7% of the population were below the [[poverty line]], including 27.2% of those under age 18 and 11.3% of those age 65 or over.