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|footnote= 1790–1960,[{{cite web|url=http://mapserver.lib.virginia.edu|title=Historical Census Browser|publisher=University of Virginia Library|access-date=June 30, 2014}}] 1900–1990,[{{cite web|url=https://www.census.gov/population/cencounts/id190090.txt|title=Population of Counties by Decennial Census: 1900 to 1990|publisher=United States Census Bureau|access-date=June 30, 2014}}] 1990–2000,[{{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|access-date=June 30, 2014}}] 2010,[{{cite web|title=State & County QuickFacts|url=http://quickfacts.census.gov/qfd/states/16/16051.html|publisher=United States Census Bureau|access-date=June 30, 2014|url-status=dead|archive-url=https://web.archive.org/web/20110717015816/http://quickfacts.census.gov/qfd/states/16/16051.html|archive-date=July 17, 2011}}] 2020[https://www.census.gov/library/visualizations/interactive/2020-population-and-housing-state-data.html 2020 Population and Housing State Data |
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|footnote= 1790–1960,[{{cite web|url=http://mapserver.lib.virginia.edu|title=Historical Census Browser|publisher=University of Virginia Library|access-date=June 30, 2014}}] 1900–1990,[{{cite web|url=https://www.census.gov/population/cencounts/id190090.txt|title=Population of Counties by Decennial Census: 1900 to 1990|publisher=United States Census Bureau|access-date=June 30, 2014}}] 1990–2000,[{{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|access-date=June 30, 2014}}] 2010,[{{cite web|title=State & County QuickFacts|url=http://quickfacts.census.gov/qfd/states/16/16051.html|publisher=United States Census Bureau|access-date=June 30, 2014|url-status=dead|archive-url=https://web.archive.org/web/20110717015816/http://quickfacts.census.gov/qfd/states/16/16051.html|archive-date=July 17, 2011}}] 2020[{{cite web |url=https://www.census.gov/library/visualizations/interactive/2020-population-and-housing-state-data.html |title=2020 Population and Housing State Data] |
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As of the [[2020 United States census|2020 census]], the county had a population of 30,891. The median age was 32.1 years. 34.1% of residents were under the age of 18 and 12.1% of residents were 65 years of age or older. For every 100 females there were 101.8 males, and for every 100 females age 18 and over there were 101.3 males age 18 and over.[{{cite web|title=2020 Decennial Census Demographic Profile (DP1)|url=https://api.census.gov/data/2020/dec/dp?get=NAME,DP1_0021P,DP1_0024P,DP1_0025C,DP1_0049C,DP1_0045C,DP1_0069C,DP1_0073C,DP1_0125P,DP1_0126P,DP1_0129P,DP1_0138P,DP1_0139P,DP1_0141P,DP1_0142P,DP1_0143P,DP1_0145P,DP1_0146P,DP1_0147C,DP1_0148C,DP1_0149C,DP1_0156C,DP1_0157C,DP1_0158C,DP1_0159P,DP1_0160P&for=county%3A051&in=state%3A16|website=United States Census Bureau|year=2021|access-date=December 20, 2025|df=mdy}}] |
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As of the [[2020 United States census|2020 census]], the county had a population of 30,891. The median age was 32.1 years. 34.1% of residents were under the age of 18 and 12.1% of residents were 65 years of age or older. For every 100 females there were 101.8 males, and for every 100 females age 18 and over there were 101.3 males age 18 and over.[{{cite web|title=2020 Decennial Census Demographic Profile (DP1)|url=https://api.census.gov/data/2020/dec/dp?get=NAME,DP1_0021P,DP1_0024P,DP1_0025C,DP1_0049C,DP1_0045C,DP1_0069C,DP1_0073C,DP1_0125P,DP1_0126P,DP1_0129P,DP1_0138P,DP1_0139P,DP1_0141P,DP1_0142P,DP1_0143P,DP1_0145P,DP1_0146P,DP1_0147C,DP1_0148C,DP1_0149C,DP1_0156C,DP1_0157C,DP1_0158C,DP1_0159P,DP1_0160P&for=county%3A051&in=state%3A16|website=United States Census Bureau|year=2021|access-date=December 20, 2025|df=mdy}}] |
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The racial makeup of the county was 87.7% White, 0.3% [[African Americans|Black or African American]], 0.7% [[Native Americans in the United States|American Indian and Alaska Native]], 0.4% [[Asian Americans|Asian]], 0.1% [[Native Hawaiians|Native Hawaiian]] and [[Pacific Islander|Pacific Islander]], 5.6% from some other race, and 5.2% from [[Multiracial Americans|two or more races]]. [[Hispanic and Latino Americans|Hispanic or Latino]] residents of any race comprised 10.5% of the population.[{{cite web|title=2020 Decennial Census Redistricting Data (Public Law 94-171)|url=https://api.census.gov/data/2020/dec/pl?get=NAME,P1_001N,P1_003N,P1_004N,P1_005N,P1_006N,P1_007N,P1_008N,P1_009N,P2_001N,P2_002N,H1_001N,H1_002N&for=county%3A051&in=state%3A16|website=United States Census Bureau|year=2021|access-date=December 20, 2025|df=mdy}}] |
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The racial makeup of the county was 87.7% White, 0.3% [[African Americans|Black or African American]], 0.7% [[Native Americans in the United States|American Indian and Alaska Native]], 0.4% [[Asian Americans|Asian]], 0.1% [[Native Hawaiians|Native Hawaiian]] and [[Pacific Islander]], 5.6% from some other race, and 5.2% from [[Multiracial Americans|two or more races]]. [[Hispanic and Latino Americans|Hispanic or Latino]] residents of any race comprised 10.5% of the population.[{{cite web|title=2020 Decennial Census Redistricting Data (Public Law 94-171)|url=https://api.census.gov/data/2020/dec/pl?get=NAME,P1_001N,P1_003N,P1_004N,P1_005N,P1_006N,P1_007N,P1_008N,P1_009N,P2_001N,P2_002N,H1_001N,H1_002N&for=county%3A051&in=state%3A16|website=United States Census Bureau|year=2021|access-date=December 20, 2025|df=mdy}}] |
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33.3% of residents lived in urban areas, while 66.7% lived in rural areas.[{{cite web|title=2020 Decennial Census Demographic and Housing Characteristics (DHC)|url=https://api.census.gov/data/2020/dec/dhc?get=NAME,P2_002N,P2_003N&for=county%3A051&in=state%3A16|website=United States Census Bureau|year=2023|access-date=December 20, 2025|df=mdy}}] |
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33.3% of residents lived in urban areas, while 66.7% lived in rural areas.[{{cite web|title=2020 Decennial Census Demographic and Housing Characteristics (DHC)|url=https://api.census.gov/data/2020/dec/dhc?get=NAME,P2_002N,P2_003N&for=county%3A051&in=state%3A16|website=United States Census Bureau|year=2023|access-date=December 20, 2025|df=mdy}}] |