Jefferson Flag

Jefferson

County:
Greene County
County Seat:
Yes
Area (mi²):
36.069
State:
Iowa

Jefferson is located in Greene County, Iowa. Jefferson has a 2025 population of 784 . 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 $87,020 with a poverty rate of 6.13%. The median age in Jefferson is 55.1 years: 52.2 years for males, and 56.1 years for females. For every 100 females there are 136.9 males.

784
Total Population
22
Density (mi²)

Jefferson Population

Jefferson Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Jefferson includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

White (100%)

Race
Population
Percentage (of total)
White784100%

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 $60,703. Household income levels show a median of $75,833. The poverty rate stands at 6.13%.

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$102,000-
Families$96,071$99,213
Households$75,833$87,020
Non Families$36,500$46,112

$60,703

Average Income

$75,833

Median Household Income

6.13%

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)