Warren County, Iowa

Major highways

Adjacent counties

• Polk County (north)
• Marion County (east)
• Lucas County (southeast)
• Clarke County (southwest)
• Madison County (west)

2020 census

As of the 2020 census, the county had a population of 52,403, a population density of 91.7/sq mi (35.4/km²), and 95.46% of the population reported being of one race; there were 20,857 housing units, of which 19,616 were occupied, leaving a 6.0% vacancy rate.^[14]

Among occupied housing units, 80.2% were owner-occupied and 19.8% were renter-occupied, with homeowner and rental vacancy rates of 1.5% and 10.6%, respectively.^[14]

There were 19,616 households in the county, of which 34.2% had children under the age of 18 living in them. Of all households, 59.2% were married-couple households, 14.5% were households with a male householder and no spouse or partner present, and 20.4% were households with a female householder and no spouse or partner present. About 22.5% of all households were made up of individuals and 10.2% had someone living alone who was 65 years of age or older.^[14]

The median age was 38.8 years. 25.4% of residents were under the age of 18 and 17.0% of residents were 65 years of age or older. For every 100 females there were 97.0 males, and for every 100 females age 18 and over there were 94.7 males age 18 and over.^[14]

The racial makeup of the county was 92.6% White, 0.9% Black or African American, 0.2% American Indian and Alaska Native, 0.7% Asian, <0.1% Native Hawaiian and Pacific Islander, 1.0% from some other race, and 4.5% from two or more races. Hispanic or Latino residents of any race comprised 3.2% of the population.^[15]

52.9% of residents lived in urban areas, while 47.1% lived in rural areas.^[17]

2010 census

As of the 2010 census recorded a population of 46,225 in the county, with a population density of 80.9/sq mi (31.2/km²). There were 18,371 housing units, of which 17,262 were occupied.^[18]

2000 census

As of the 2000 census, there were 40,671 people, 14,708 households, and 11,207 families in the county. The population density was 71 inhabitants per square mile (27/km²). There were 15,289 housing units at an average density of 27 per square mile (10/km²). The racial makeup of the county was 98.08% White, 0.27% Black or African American, 0.17% Native American, 0.38% Asian, 0.04% Pacific Islander, 0.29% from other races, and 0.76% from two or more races. 1.08%. were Hispanic or Latino of any race.

Of the 14,708 households 37.80% had children under the age of 18 living with them, 64.50% were married couples living together, 8.80% had a female householder with no husband present, and 23.80% were non-families. 19.90% of households were one person and 8.70% were one person aged 65 or older. The average household size was 2.65 and the average family size was 3.05.

The age distribution was 27.00% under the age of 18, 9.70% from 18 to 24, 28.20% from 25 to 44, 23.20% from 45 to 64, and 11.80% 65 or older. The median age was 36 years. For every 100 females, there were 94.60 males. For every 100 females age 18 and over, there were 91.80 males.

The median household income was $50,349 and the median family income was $56,344. Males had a median income of $36,983 versus $26,768 for females. The per capita income for the county was $20,558. About 3.70% of families and 5.10% of the population were below the poverty line, including 6.40% of those under age 18 and 5.20% of those age 65 or over.

Cities

Unincorporated communities

• Beech
• Churchville
• Clarkson
• Conger
• Cool
• Ford
• Liberty Center
• Medora^[19][20][21]
• Palmyra
• Prole
• Scotch Ridge
• Wick

Townships

Warren County has sixteen townships:^[22]

Population ranking

The population ranking of the following table is based on the 2020 census of Warren County.^[2]

† county seat