Jefferson Flag

Jefferson

County:
Greene County
County Seat:
Yes
Area (mi²):
6.016
State:
Iowa

Jefferson is a city located in Greene County, Iowa. Jefferson has a 2025 population of 4,140. It is also the county seat of Greene County. Jefferson is currently declining at a rate of -0.19% annually and its population has decreased by -0.91% since the most recent census, which recorded a population of 4,178 in 2020.

The average household income in Jefferson is $73,678 with a poverty rate of 8.42%. The median age in Jefferson is 51.5 years: 43.5 years for males, and 57.4 years for females.

4.1K
Total Population
688
Density (mi²)
-8 -0.19%
Growth

Jefferson Population

Jefferson Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Jefferson includes 93.76% White, and smaller percentages for other race, Black or African American and multiracial populations.

Population by Race

White (93.8%)

Two or more races (5.2%)

Other race (0.7%)

Black or African American (0.3%)

Race
Population
Percentage (of total)
White3,90493.76%
Two or more races2185.24%
Other race300.72%
Black or African American120.29%

Jefferson Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Jefferson's average per capita income is $46,250. Household income levels show a median of $54,286. The poverty rate stands at 8.42%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$100,234-
Families$85,625$97,838
Households$54,286$73,678
Non Families$38,750$46,514

$46,250

Average Income

$54,286

Median Household Income

8.42%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)