2020 census
The 2020 census recorded a population of 3,704 in the county, with a population density of 8.7212/sq mi (3.3673/km2). 97.11% of the population reported being of one race. 94.20% were non-Hispanic White, 0.32% were Black, 1.13% were Hispanic, 0.51% were Native American, 0.35% were Asian, 0.00% were Native Hawaiian or Pacific Islander and 3.48% were some other race or more than one race. There were 1,888 housing units of which 1,614 were occupied. [1]
2010 census
As of the 2010 United States census, there were 4,029 people, 1,715 households, and 1,126 families residing in the county. [11] The population density was 9.5 inhabitants per square mile (3.7/km2). There were 2,010 housing units at an average density of 4.7 per square mile (1.8/km2). [12] The racial makeup of the county was 98.1% white, 0.6% Asian, 0.5% American Indian, 0.2% black or African American, 0.1% from other races, and 0.5% from two or more races. Those of Hispanic or Latino origin made up 0.9% of the population. [11] In terms of ancestry, 33.6% were German, 15.9% were Irish, 14.7% were English, and 4.9% were American. [13]
Of the 1,715 households, 25.7% had children under the age of 18 living with them, 56.2% were married couples living together, 5.8% had a female householder with no husband present, 34.3% were non-families, and 29.0% of all households were made up of individuals. The average household size was 2.28 and the average family size was 2.81. The median age was 46.7 years. [11]
The median income for a household in the county was $40,368 and the median income for a family was $52,782. Males had a median income of $33,505 versus $25,332 for females. The per capita income for the county was $23,549. About 6.0% of families and 12.2% of the population were below the poverty line, including 8.9% of those under age 18 and 18.5% of those age 65 or over. [14]
United States
Iowa 
