Major highways

• Iowa Highway 4
• Iowa Highway 25
• Iowa Highway 44
• Iowa Highway 141

Adjacent counties

• Greene County (north)
• Dallas County (east)
• Adair County (south)
• Audubon County (west)
• Carroll County (northwest)

2020 census

The 2020 census recorded a population of 10,623 in the county, with a population density of 17.8659/sq mi (6.8981/km²). 96.86% of the population reported being of one race. 91.86% were non-Hispanic White, 0.34% were Black, 2.58% were Hispanic, 0.22% were Native American, 0.36% were Asian, 0.15% were Native Hawaiian or Pacific Islander and 4.50% were some other race or more than one race. There were 5,773 housing units, of which 4,529 were occupied.^[1]

2010 census

The 2010 census recorded a population of 10,954 in the county, with a population density of 18.5463/sq mi (7.1608/km²). There were 5,756 housing units, of which 4,544 were occupied.^[12]

2000 census

At the 2000 census there were 11,353 people, 4,641 households, and 3,248 families in the county. The population density was 19 people per square mile (7.3 people/km²). There were 5,467 housing units at an average density of 9 units per square mile (3.5 units/km²). The racial makeup of the county was 98.61% White, 0.12% Black or African American, 0.05% Native American, 0.14% Asian, 0.04% Pacific Islander, 0.42% from other races, and 0.61% from two or more races. 1.06%.^[13] were Hispanic or Latino of any race.

Of the 4,641 households 27.90% had children under the age of 18 living with them, 60.00% were married couples living together, 6.60% had a female householder with no husband present, and 30.00% were non-families. 26.10% of households were one person and 14.10% were one person aged 65 or older. The average household size was 2.39 and the average family size was 2.86.

The age distribution was 23.60% under the age of 18, 6.30% from 18 to 24, 24.80% from 25 to 44, 24.90% from 45 to 64, and 20.50% 65 or older. The median age was 42 years. For every 100 females, there were 97.60 males. For every 100 females age 18 and over, there were 94.30 males.

The median household income was $36,495 and the median family income was $43,601. Males had a median income of $31,018 versus $22,077 for females. The per capita income for the county was $19,726. About 5.80% of families and 8.00% of the population were below the poverty line, including 8.90% of those under age 18 and 8.10% of those age 65 or over.

Cities

Townships

Unincorporated Communities

Census-designated places

• Lake Panorama

Population ranking

The population ranking of the following table is based on the 2020 census of Guthrie County.^[1]

† county seat