Putnam County's 2026 population is estimated at 5,723, reflecting a 0.79% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Putnam County is the 94th largest county in Illinois. The 2010 population was 6,014 and has grown -4.84% since 2010.
Data after 2023 is projected based on recent change
Overall: 47.4 years
Female: 49.5 years
Male: 44.3 years
There are 4,498 adults, (1,379 of whom are seniors) in Putnam County.
Female: 2,693 (48.1%)
Male: 2,908 (51.9%)
The racial composition of Putnam County includes 91.29% White, and smaller percentages for other race, Asian, Black or African American, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 5,113 | 91.29% |
| Two or more races | 285 | 5.09% |
| Other race | 128 | 2.29% |
| Asian | 42 | 0.75% |
| Black or African American | 19 | 0.34% |
| Native Hawaiian or Pacific Islander | 12 | 0.21% |
| Native American | 2 | 0.04% |
Putnam County 's average per capita income is $50,833. Household income levels show a median of $75,590. The poverty rate stands at 8.09%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $98,458 | - |
| Families | $88,438 | $107,219 |
| Households | $75,590 | $92,619 |
| Non Families | $46,429 | $58,507 |
Average Income
Median Household Income
Poverty Rate
