Major highways

Transit

• Jefferson Lines

Adjacent counties

• Stone County, Missouri (north)
• Taney County, Missouri (northeast)
• Boone County (east)
• Newton County (southeast)
• Madison County (south)
• Benton County (west)
• Barry County, Missouri (northwest)

2020 census

As of the 2020 United States census, there were 28,260 people, 11,139 households, and 7,497 families residing in the county.

2000 census

As of the 2000 census,^[13] there were 25,357 people, 10,189 households, and 7,111 families residing in the county. The population density was 40 people per square mile (15 people/km²). There were 11,828 housing units at an average density of 19 units per square mile (7.3 units/km²). The racial composition of the county was 93.63% White, 0.11% Black or African American, 0.88% Native American, 0.41% Asian, 0.08% Pacific Islander, 3.34% from other races, and 1.55% from two or more races. 9.74% of the population were Hispanic or Latino of any race. 10.03% reported speaking Spanish at home.^[14]

There were 10,189 households, out of which 29.20% had children under the age of 18 living with them, 57.10% were married couples living together, 8.60% had a female householder with no husband present, and 30.20% were non-families. 25.20% of all households were made up of individuals, and 10.30% had someone living alone, who was 65 years of age or older. The average household size was 2.47 and the average family size was 2.93.

In the county, the population was spread out, with 24.00% under the age of 18, 8.10% from 18 to 24, 26.20% from 25 to 44, 26.00% from 45 to 64, and 15.80% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 97.40 males. For every 100 females age 18 and over, there were 95.30 males.

The median income for a household in the county was $27,924, and the median income for a family was $33,218. Males had a median income of $21,896 versus $18,159 for females. The per capita income for the county was $16,003. About 11.00% of families and 15.50% of the population were below the poverty line, including 20.70% of those under age 18 and 13.60% of those age 65 or over.

Cities

• Berryville (county seat)
• Eureka Springs (county seat)
• Green Forest
• Holiday Island

Towns

• Alpena (partly in Boone County)
• Beaver
• Blue Eye
• Oak Grove

Other unincorporated communities

• Carrollton

Rudd Osage

Townships

Townships in Arkansas are the divisions of a county. Each township includes unincorporated areas; some may have incorporated cities or towns within part of their boundaries. Arkansas townships have limited purposes in modern times. However, the United States census does list Arkansas population based on townships (sometimes referred to as "county subdivisions" or "minor civil divisions"). Townships are also of value for historical purposes in terms of genealogical research. Each town or city is within one or more townships in an Arkansas county based on census maps and publications. The townships of Carroll County are listed below; listed in parentheses are the cities, towns, and/or census-designated places that are fully or partially inside the township. ^[15][16]