Jefferson Flag

Jefferson

County Seat:
No
Area (mi²):
8.802
State:
Missouri

Jefferson is located in St. Louis County, Missouri. Jefferson has a 2025 population of 37,417 . 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 $162,751 with a poverty rate of 3.6%. The median age in Jefferson is 41.4 years: 39.8 years for males, and 43.2 years for females. For every 100 females there are 83.8 males.

37.4K
Total Population
4,251
Density (mi²)

Jefferson Population

Jefferson Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Jefferson includes 84.8% White, 3.74% Black or African American, and smaller percentages for Asian, other race, Native American and multiracial populations.

Population by Race

White (84.8%)

Two or more races (8.31%)

Black or African American (3.74%)

Asian (2.4%)

Other race (0.67%)

Native American (0.08%)

Race
Population
Percentage (of total)
White31,72984.8%
Two or more races3,1098.31%
Black or African American1,4013.74%
Asian8982.4%
Other race2510.67%
Native American290.08%

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 $84,129. Household income levels show a median of $112,545. The poverty rate stands at 3.6%.

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$183,977-
Families$164,833$207,513
Households$112,545$162,751
Non Families$73,713$86,569

$84,129

Average Income

$112,545

Median Household Income

3.6%

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)