Marion County's estimated 2026 population is 11,474 with a growth rate of -0.85% in the past year according to the most recent United States census data. Marion County is the 37th largest county in Kansas. The 2010 population was 12,671 and has seen a growth of -9.45% since that time.
Data after 2023 is projected based on recent change
The racial composition of Marion County includes 93.29% White, and smaller percentages for Black or African American, Native American, Asian, other race and multiracial populations.
White (93.29%)
Two or more races (4.05%)
Black or African American (1.15%)
Native American (0.53%)
Asian (0.53%)
Other race (0.44%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 11,004 | 93.29% |
| Two or more races | 478 | 4.05% |
| Black or African American | 136 | 1.15% |
| Native American | 63 | 0.53% |
| Asian | 62 | 0.53% |
| Other race | 52 | 0.44% |
Married
Widowed
Divorced
Separated
Never Married
Marion County's average per capita income is $42,536. Household income levels show a median of $63,438. The poverty rate stands at 10.03%.
Name | Median | Mean |
|---|---|---|
| Married Families | $86,596 | - |
| Families | $79,818 | $96,828 |
| Households | $63,438 | $85,216 |
| Non Families | $38,777 | $63,497 |
Average Income
Median Household Income
Poverty Rate
