Jefferson City, Montana Demographics & Population 2026
During the 2020–2024 ACS period, Jefferson City, Montana had a total population of 533, the 150th largest community in Montana, with a median household income of $125,682, which is 73% higher than the state average. The poverty rate is 0.0%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 73% above the state average — one of the wealthiest communities in Montana.
Jefferson City Quick Facts
How Jefferson City Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 446 | 533 | +19.5% |
| Median household income | $73,875 | $125,682 | +70.1% |
How Jefferson City Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 29 | National average: 61
Education
Educational Attainment (Adults 25+)
Jefferson City Rankings in Montana
Explore Montana Rankings
Other Cities in Jefferson County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Montana City | 3,092 | $129,755 | 1.8% | $571,200 |
| Clancy | 1,874 | $125,000 | 4.8% | $469,300 |
| Boulder | 1,284 | $72,500 | 3.8% | $212,300 |
| Whitehall | 1,156 | $44,844 | 20.6% | $194,100 |
| South Hills | 620 | $168,235 | 1.0% | $703,800 |
| Basin | 352 | $46,597 | 14.4% | $227,700 |
| Rader Creek | 310 | $100,691 | 4.8% | $463,200 |
| Elkhorn | 34 | N/A | 0.0% | N/A |
| Cardwell | 30 | N/A | 13.3% | N/A |
Cities Similar to Jefferson City
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Lindisfarne | 533 | N/A | $653,800 | 48.1% | 14.3% |
| Turah | 543 | $130,417 | $470,400 | 37.9% | 3.5% |
| Kerr | 463 | N/A | $558,200 | 46.2% | 27.9% |
| Culbertson | 567 | $101,136 | $217,200 | 31.3% | 10.3% |
| Brockton | 439 | N/A | $62,500 | 2.1% | 49.0% |
A note before these figures: with a population of 533, Jefferson City's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
Jefferson City is a small community located in Montana, within Jefferson County. The total population is 533. It ranks as the 150th most populous out of 475 Census-designated places in Montana.
Age Demographics
The median age in Jefferson City is 55.2 years. This is 37% higher than the state median of 40.4 years. With 29.3% of the population under 18, Jefferson City has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Jefferson City is $125,682. This is 73% higher than the state median of $72,509. It is also 56% higher than the national median of $80,734. The ACS records no residents below the poverty line in Jefferson City. In a community this small the estimate rests on very few survey responses, so it should be read as an absence of measurement rather than a measured absence of poverty. The survey records no unemployed residents in Jefferson City, which reflects the size of the sample rather than a labor market without joblessness. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 45% higher than the state average of 69.2%.
Race & Ethnicity
Jefferson City has a predominantly White (non-Hispanic) population, comprising 96.3% of all residents.
Education
25.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 28% lower than the state rate of 35.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 98.9%. Notably, 15.4% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Jefferson City, Montana is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Montana state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 475 Census-designated places in Montana. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Jefferson City, Montana?
Jefferson City, Montana has a population of 533 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Jefferson City, MT?
The median household income in Jefferson City is $125,682, which is 56% higher than the national median of $80,734.
What is the poverty rate in Jefferson City, MT?
The ACS sample for Jefferson City recorded no residents below the federal poverty line. Because the community is small, this indicates that the survey did not capture poverty here rather than that no poverty exists — the estimate carries a wide margin of error.
What is the racial makeup of Jefferson City, Montana?
Jefferson City's population is 96.3% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Jefferson City, MT?
The Census Bureau does not publish a reliable median home value estimate for Jefferson City — there are too few owner-occupied homes in the ACS sample. The national median is $332,700.
How educated is Jefferson City, Montana?
25.5% of adults (25+) in Jefferson City hold a bachelor's degree or higher, and 15.4% hold a graduate or professional degree.