Fairfield is a city located in Wayne County, Illinois. Fairfield has a 2025 population of 4,765 . It is also the county seat of Wayne County . Fairfield is currently declining at a rate of -0.52% annually and its population has decreased by -2.5% since the most recent census, which recorded a population of 4,887 in 2020.
The average household income in Fairfield is $68,139 with a poverty rate of 18.45%. The median age in Fairfield is 44.5 years: 40.3 years for males, and 50.1 years for females. For every 100 females there are 103.0 males.
Data after 2023 is projected based on recent change
The racial composition of Fairfield includes 95.41% White, and smaller percentages for Two or more races, Black or African American, Asian, other race and multiracial populations.
White (95.41%)
Two or more races (2.51%)
Black or African American (0.79%)
Asian (0.71%)
Other race (0.58%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 4,444 | 95.41% |
| Two or more races | 117 | 2.51% |
| Black or African American | 37 | 0.79% |
| Asian | 33 | 0.71% |
| Other race | 27 | 0.58% |
Married
Widowed
Divorced
Separated
Never Married
Fairfield's average per capita income is $40,027. Household income levels show a median of $41,026. The poverty rate stands at 18.45%.
Name | Median | Mean |
|---|---|---|
| Married Families | $83,498 | - |
| Families | $75,658 | $101,327 |
| Households | $41,026 | $68,139 |
| Non Families | $23,464 | $28,042 |
Average Income
Median Household Income
Poverty Rate