Marion County's estimated 2026 population is 28,642 with a growth rate of 0.41% in the past year according to the most recent United States census data. Marion County is the 38th largest county in Missouri. The 2010 population was 28,785 and has seen a growth of -0.5% since that time.
Data after 2023 is projected based on recent change
Overall: 39.6 years
Female: 40.4 years
Male: 38.3 years
There are 21,623 adults, (5,406 of whom are seniors) in Marion County.
Female: 14,628 (51.4%)
Male: 13,829 (48.6%)
The racial composition of Marion County includes 89.15% White, 4.19% Black or African American, and smaller percentages for Asian, other race, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 25,370 | 89.15% |
| Two or more races | 1,449 | 5.09% |
| Black or African American | 1,192 | 4.19% |
| Asian | 228 | 0.8% |
| Other race | 150 | 0.53% |
| Native American | 68 | 0.24% |
Marion County's average per capita income is $44,661. Household income levels show a median of $62,903. The poverty rate stands at 14.21%.
Name | Median | Mean |
|---|---|---|
| Married Families | $94,564 | - |
| Families | $76,314 | $90,600 |
| Households | $62,903 | $75,181 |
| Non Families | $31,806 | $40,168 |
Average Income
Median Household Income
Poverty Rate
