Jefferson is located in Greene County, Iowa. Jefferson has a 2025 population of 2,473 . It is also the county seat of Greene County . Jefferson is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The average household income in Jefferson is $85,607 with a poverty rate of 17.51%. The median age in Jefferson is 58 years: 54.8 years for males, and 58.4 years for females. For every 100 females there are 73.9 males.
Data after 2023 is projected based on recent change
The racial composition of Jefferson includes 97.17% White, and smaller percentages for Two or more races, other race, Black or African American and multiracial populations.
White (97.17%)
Two or more races (1.66%)
Other race (0.89%)
Black or African American (0.28%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 2,403 | 97.17% |
| Two or more races | 41 | 1.66% |
| Other race | 22 | 0.89% |
| Black or African American | 7 | 0.28% |
Married
Widowed
Divorced
Separated
Never Married
Jefferson's average per capita income is $41,468. Household income levels show a median of $55,469. The poverty rate stands at 17.51%.
Name | Median | Mean |
|---|---|---|
| Married Families | $105,074 | - |
| Families | $68,558 | $108,056 |
| Households | $55,469 | $85,607 |
| Non Families | $34,050 | $49,575 |
Average Income
Median Household Income
Poverty Rate