Adair County's 2026 population is estimated at 26,518, reflecting a 1.64% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Adair County is the 41st largest county in Missouri. The 2010 population was 25,638 and has grown 3.43% since 2010.
Data after 2023 is projected based on recent change
Overall: 30.2 years
Female: 30.1 years
Male: 30.2 years
There are 20,561 adults, (3,893 of whom are seniors) in Adair County.
Female: 13,119 (51.9%)
Male: 12,182 (48.1%)
The racial composition of Adair County includes 88.38% White, 4.44% Black or African American, and smaller percentages for Asian, other race, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 22,360 | 88.38% |
| Black or African American | 1,123 | 4.44% |
| Two or more races | 1,077 | 4.26% |
| Asian | 526 | 2.08% |
| Other race | 116 | 0.46% |
| Native American | 99 | 0.39% |
Adair County 's average per capita income is $45,532. Household income levels show a median of $61,536. The poverty rate stands at 22.01%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $90,211 | - |
| Families | $79,677 | $122,556 |
| Households | $61,536 | $90,838 |
| Non Families | $28,216 | $46,985 |
Average Income
Median Household Income
Poverty Rate