Fairfield is a city located in Jefferson County, Iowa. Fairfield has a 2025 population of 9,526 . It is also the county seat of Jefferson County . Fairfield is currently growing at a rate of 0.16% annually and its population has increased by 0.8% since the most recent census, which recorded a population of 9,450 in 2020.
The average household income in Fairfield is $75,378 with a poverty rate of 19.18%. The median age in Fairfield is 40.5 years: 37.1 years for males, and 46.4 years for females. For every 100 females there are 111.2 males.
Data after 2023 is projected based on recent change
The racial composition of Fairfield includes 77.3% White, 9.68% Black or African American, 6.74% Asian, and smaller percentages for Native American, other race and multiracial populations.
White (77.3%)
Black or African American (9.68%)
Asian (6.74%)
Two or more races (3.82%)
Native American (1.4%)
Other race (1.05%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 7,296 | 77.3% |
| Black or African American | 914 | 9.68% |
| Asian | 636 | 6.74% |
| Two or more races | 361 | 3.82% |
| Native American | 132 | 1.4% |
| Other race | 99 | 1.05% |
Married
Widowed
Divorced
Separated
Never Married
Fairfield's average per capita income is $31,685. Household income levels show a median of $48,302. The poverty rate stands at 19.18%.
Name | Median | Mean |
|---|---|---|
| Married Families | $88,625 | - |
| Families | $71,799 | $105,715 |
| Households | $48,302 | $75,378 |
| Non Families | $30,807 | $46,427 |
Average Income
Median Household Income
Poverty Rate