2020 census As of the
2020 census, the county had a population of 20,450. Of the residents, 28.5% were under the age of 18 and 15.0% were 65 years of age or older; the median age was 37.3 years. For every 100 females there were 101.7 males, and for every 100 females age 18 and over there were 99.0 males. The racial makeup of the county was 88.1% White, 0.3%
Black or African American, 0.9%
American Indian and Alaska Native, 0.6%
Asian, 4.2% from some other race, and 5.8% from
two or more races.
Hispanic or Latino residents of any race comprised 9.7% of the population.
2010 census As of the
2010 United States census, there were 21,118 people, 7,668 households, and 5,577 families in the county. The population density was . There were 8,713 housing units at an average density of . The racial makeup of the county was 92.4% white, 0.8% American Indian, 0.3% black or African American, 0.3% Asian, 0.2% Pacific islander, 4.1% from other races, and 2.0% from two or more races. Those of Hispanic or Latino origin made up 8.8% of the population. Of the 7,668 households, 39.8% had children under the age of 18 living with them, 58.3% were married couples living together, 9.7% had a female householder with no husband present, 27.3% were non-families, and 22.6% of all households were made up of individuals. The average household size was 2.72 and the average family size was 3.19. The median age was 33.9 years.
2000 census As of the
2000 United States census, there were 19,742 people, 6,823 households, and 5,144 families in the county. The
population density was . There were 8,011 housing units at an average density of . The racial makeup of the county was 94.32%
White, 0.11%
Black or
African American, 0.87%
Native American, 0.27%
Asian, 0.07%
Pacific Islander, 2.86% from
other races, and 1.50% from two or more races. 5.34% of the population were
Hispanic or
Latino of any race. 27.7% were of
English, 14.8%
German, 8.3%
American and 6.9%
Irish ancestry. There were 6,823 households, out of which 44.70% had children under the age of 18 living with them, 61.20% were
married couples living together, 9.90% had a female householder with no husband present, and 24.60% were non-families. 20.90% of all households were made up of individuals, and 5.60% had someone living alone who was 65 years of age or older. The average household size was 2.84 and the average family size was 3.31. The county population contained 33.50% under the age of 18, 9.00% from 18 to 24, 29.20% from 25 to 44, 21.40% from 45 to 64, and 7.00% who were 65 years of age or older. The median age was 31 years. For every 100 females there were 103.80 males. For every 100 females age 18 and over, there were 100.30 males. The median income for a household in the county was $44,544, and the median income for a family was $49,520. Males had a median income of $37,500 versus $21,450 for females. The
per capita income for the county was $16,994. About 7.80% of families and 9.90% of the population were below the
poverty line, including 11.90% of those under age 18 and 7.30% of those age 65 or over. ==Religion==