Putnam County's 2026 population is estimated at 4,339, reflecting a -2.25% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Putnam County is the 110th largest county in Missouri. The 2010 population was 4,974 and has grown -12.77% since 2010.
Data after 2023 is projected based on recent change
Overall: 45.9 years
Female: 47.7 years
Male: 43.6 years
There are 3,593 adults, (1,162 of whom are seniors) in Putnam County.
Female: 2,220 (47.8%)
Male: 2,422 (52.2%)
The racial composition of Putnam County includes 96.04% White, and smaller percentages for Native American, Black or African American, other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 4,458 | 96.04% |
| Two or more races | 145 | 3.12% |
| Native American | 23 | 0.5% |
| Black or African American | 9 | 0.19% |
| Other race | 7 | 0.15% |
Putnam County 's average per capita income is $45,662. Household income levels show a median of $63,510. The poverty rate stands at 15.52%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $95,769 | - |
| Families | $85,729 | $100,956 |
| Households | $63,510 | $79,666 |
| Non Families | $26,623 | $47,412 |
Average Income
Median Household Income
Poverty Rate