Thomas County's 2026 population is estimated at 7,690, reflecting a -0.72% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Thomas County is the 49th largest county in Kansas. The 2010 population was 7,932 and has grown -3.05% since 2010.
Data after 2023 is projected based on recent change
Overall: 35.3 years
Female: 36.9 years
Male: 33 years
There are 5,943 adults, (1,468 of whom are seniors) in Thomas County.
Female: 3,905 (49.5%)
Male: 3,980 (50.5%)
The racial composition of Thomas County includes 89.65% White, and smaller percentages for other race, Black or African American, Asian, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 7,069 | 89.65% |
| Two or more races | 488 | 6.19% |
| Other race | 234 | 2.97% |
| Black or African American | 82 | 1.04% |
| Asian | 11 | 0.14% |
| Native American | 1 | 0.01% |
Thomas County 's average per capita income is $47,130. Household income levels show a median of $71,325. The poverty rate stands at 6.49%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $109,712 | - |
| Families | $98,333 | $117,015 |
| Households | $71,325 | $93,106 |
| Non Families | $40,272 | $45,335 |
Average Income
Median Household Income
Poverty Rate
