Putnam County's 2026 population is estimated at 38,256, reflecting a 0.59% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Putnam County is the 40th largest county in Indiana. The 2010 population was 37,903 and has grown 0.93% since 2010.
Data after 2023 is projected based on recent change
Overall: 38.4 years
Female: 39.8 years
Male: 37.6 years
There are 30,071 adults, (6,468 of whom are seniors) in Putnam County.
Female: 17,542 (47.1%)
Male: 19,738 (52.9%)
The racial composition of Putnam County includes 91.35% White, 3.34% Black or African American, and smaller percentages for Asian, other race, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 34,056 | 91.35% |
| Black or African American | 1,244 | 3.34% |
| Two or more races | 1,207 | 3.24% |
| Asian | 552 | 1.48% |
| Other race | 188 | 0.5% |
| Native American | 33 | 0.09% |
Putnam County 's average per capita income is $50,453. Household income levels show a median of $78,378. The poverty rate stands at 8.69%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $102,716 | - |
| Families | $88,642 | $104,853 |
| Households | $78,378 | $90,595 |
| Non Families | $33,759 | $52,305 |
Average Income
Median Household Income
Poverty Rate