Jefferson City Flag

Jefferson City

County Seat:
No
Area (mi²):
23.218
State:
Montana

Jefferson City is a CDP located in Jefferson County, Montana. Jefferson City has a 2026 population of 440. Jefferson City is currently declining at a rate of -0.45% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median household income in Jefferson City is $125,682 with a poverty rate of 0%. The median age in Jefferson City is 55.2 years: 55.3 years for males, and 38.3 years for females. For every 100 females there are 101.1 males.

440
Total Population
19
Density (mi²)
-2 -0.45%
Growth

Jefferson City Population

Jefferson City Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026440-2-0.45%
2025442-2-0.45%

Median Age

Overall: 55.2 years
Female: 38.3 years
Male: 55.3 years

Jefferson City Adults

There are 377 adults, (125 of whom are seniors) in Jefferson City.

Sex Ratio

Female: 265 (49.7%)
Male: 268 (50.3%)

Demographics

The racial composition of Jefferson City includes 96.25% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White51396.25%
Two or more races203.75%
Race
Population ↓
Percentage (of total)
White51396.25%
Two or more races203.75%

Jefferson City Marital Status

Economics and Income Statistics

Jefferson City 's average per capita income is $52,273. Household income levels show a median of $125,682. The poverty rate stands at 0%.

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
Families$126,402$128,286
Married Families$126,402-
Households$125,682$113,353
Non Families--

$52,273

Average Income

$125,682

Median Household Income

0%

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)