Lyon County's 2026 population is estimated at 33,026, reflecting a 0.77% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Lyon County is the 18th largest county in Kansas. The 2010 population was 33,647 and has grown -1.85% since 2010.
Data after 2023 is projected based on recent change
Overall: 33.1 years
Female: 33.1 years
Male: 33 years
There are 25,053 adults, (5,196 of whom are seniors) in Lyon County.
Female: 16,421 (51%)
Male: 15,765 (49%)
The racial composition of Lyon County includes 71.54% White, 5.34% other race, and smaller percentages for Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 23,027 | 71.54% |
| Two or more races | 6,169 | 19.17% |
| Other race | 1,720 | 5.34% |
| Asian | 665 | 2.07% |
| Black or African American | 452 | 1.4% |
| Native American | 149 | 0.46% |
| Native Hawaiian or Pacific Islander | 4 | 0.01% |
Lyon County 's average per capita income is $39,724. Household income levels show a median of $59,912. The poverty rate stands at 14.63%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $81,281 | $98,329 |
| Families | $72,956 | $90,408 |
| Households | $59,912 | $72,670 |
| Non Families | $37,790 | $44,907 |
Average Income
Median Household Income
Poverty Rate
