Effingham County's 2026 population is estimated at 34,900, reflecting a 0.43% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Effingham County is the 40th largest county in Illinois. The 2010 population was 34,222 and has grown 1.98% since 2010.
Data after 2023 is projected based on recent change
Overall: 40 years
Female: 40.7 years
Male: 39.4 years
There are 26,257 adults, (6,501 of whom are seniors) in Effingham County.
Female: 17,061 (49.4%)
Male: 17,461 (50.6%)
The racial composition of Effingham County includes 95.77% White, and smaller percentages for Two or more races, Asian, other race, Black or African American, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 33,062 | 95.77% |
| Two or more races | 759 | 2.2% |
| Asian | 297 | 0.86% |
| Other race | 278 | 0.81% |
| Black or African American | 101 | 0.29% |
| Native American | 25 | 0.07% |
Effingham County 's average per capita income is $51,308. Household income levels show a median of $80,404. The poverty rate stands at 10.11%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $109,158 | $132,482 |
| Families | $99,490 | $118,226 |
| Households | $80,404 | $99,682 |
| Non Families | $49,715 | $61,663 |
Average Income
Median Household Income
Poverty Rate
