Hardin County's 2026 population is estimated at 3,452, reflecting a -1.4% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Hardin County is the 102nd largest county in Illinois. The 2010 population was 4,316 and has grown -20.02% since 2010.
Data after 2023 is projected based on recent change
Overall: 53.6 years
Female: 54.4 years
Male: 53.5 years
There are 3,072 adults, (1,076 of whom are seniors) in Hardin County.
Female: 1,716 (47.6%)
Male: 1,889 (52.4%)
The racial composition of Hardin County includes 96.45% White, and smaller percentages for Two or more races, Black or African American, other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 3,477 | 96.45% |
| Two or more races | 63 | 1.75% |
| Black or African American | 49 | 1.36% |
| Other race | 16 | 0.44% |
Hardin County 's average per capita income is $36,685. Household income levels show a median of $54,271. The poverty rate stands at 10.96%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $70,114 | - |
| Families | $68,904 | $79,277 |
| Households | $54,271 | $64,030 |
| Non Families | $26,210 | $34,034 |
Average Income
Median Household Income
Poverty Rate