Marion County's estimated 2026 population is 11,589 with a growth rate of -0.39% 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 -8.54% since that time.
Data after 2023 is projected based on recent change
Overall: 43.5 years
Female: 44.7 years
Male: 42.4 years
There are 9,278 adults, (2,784 of whom are seniors) in Marion County.
Female: 5,800 (49.3%)
Male: 5,954 (50.7%)
The racial composition of Marion County includes 92.67% White, and smaller percentages for Black or African American, other race, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 10,893 | 92.67% |
| Two or more races | 538 | 4.58% |
| Black or African American | 113 | 0.96% |
| Other race | 89 | 0.76% |
| Native American | 65 | 0.55% |
| Asian | 54 | 0.46% |
| Native Hawaiian or Pacific Islander | 2 | 0.02% |
Marion County's average per capita income is $43,509. Household income levels show a median of $64,695. The poverty rate stands at 9.15%.
Name | Median | Mean |
|---|---|---|
| Married Families | $86,558 | - |
| Families | $80,684 | $96,440 |
| Households | $64,695 | $86,234 |
| Non Families | $36,788 | $66,002 |
Average Income
Median Household Income
Poverty Rate
