Centralia is a city located in Marion County, Illinois. Centralia has a 2026 population of 11,608. Centralia is currently declining at a rate of -0.76% annually and its population has decreased by -4.41% since the most recent census, which recorded a population of 12,144 in 2020.
The median household income in Centralia is $47,807 with a poverty rate of 24.34%. The median age in Centralia is 39.1 years: 38 years for males, and 40.3 years for females. For every 100 females there are 97.6 males.
Data after 2023 is projected based on recent change
Overall: 39.1 years
Female: 40.3 years
Male: 38 years
There are 8,965 adults, (2,615 of whom are seniors) in Centralia.
Female: 5,999 (50.6%)
Male: 5,857 (49.4%)
The racial composition of Centralia includes 82.34% White, 7.05% Black or African American, and smaller percentages for other race, Asian, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 9,762 | 82.34% |
| Black or African American | 836 | 7.05% |
| Two or more races | 805 | 6.79% |
| Other race | 255 | 2.15% |
| Asian | 194 | 1.64% |
| Native American | 4 | 0.03% |
Centralia 's average per capita income is $40,647. Household income levels show a median of $47,807. The poverty rate stands at 24.34%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $85,709 | - |
| Families | $66,573 | $78,654 |
| Households | $47,807 | $62,071 |
| Non Families | $32,909 | $39,821 |
Average Income
Median Household Income
Poverty Rate