Population
209 residents
Census ACS 2023 - Montana
City profile · Montana · Census ACS 2023
St. Mary, MT
Population, income, housing, safety, climate and schools for St. Mary - drawn straight from Census ACS, FBI UCR, NOAA, NCES, HUD and FEMA, refreshed on the 2024–2025 release cycle.
- 209
- Residents
- $1,275
- Median rent (state)
St. Mary - the verdict
Montana's St. Mary counts 209 residents. Source: Census ACS.
- 44th
- percentile, median rent
📝 How we sourced this
Population, income, and housing-cost figures come from the U.S. Census Bureau American Community Survey 5-year estimates (B-series tables). Crime data uses FBI UCR; climate uses NOAA Climate Normals; school counts come from NCES Common Core of Data; permits use the Census Building Permits Survey (BPS). See our methodology page for the full ETL pipeline and OMB / FIPS join keys.
Data Snapshot: St. Mary, MT
Montana's St. Mary is a small town, with 209 residents per the latest Census Bureau ACS figures. The median resident age is 22.0 years. 34.3% of adults here have a bachelor's degree or higher; 79.4% of working-age residents are in the labor force.
Living costs in Montana run below the national norm: on BEA's 100-equals-national-average cost index, Montana scores 94.6 (Below Average), per the 2024 Regional Price Parities release. HUD Fair Market Rent for a typical two-bedroom in this state is $1,275 per month. Monthly utility costs average around $175 across Montana, per EIA 2023 residential energy estimates. FEMA's National Risk Index rates natural-hazard exposure at 51.5 out of 100 (Low).
Median Household Income
N/A /yr
Poverty 0.0%
Cost of Living Index (state)
94.6 (US=100)
Below Average - BEA RPP 2024, Montana average
How does St. Mary compare to other US cities?
St. Mary measured against every US city with 1,000+ residents, computed live from the same Census and FBI data shown throughout this page.
Median rent 44% pricier than other cities
"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.
How we calculate these percentiles & ranks
Each percentile compares St. Mary against every qualifying US city; each in-state rank narrows that to Montana only. Full formula and direction notes: methodology.
Montana-relative analysis
Poverty Rate places St. Mary near the bottom of Montana's cities
Among the 315 Montana cities PlainCities tracks with reported poverty rate data, St. Mary ranks #230 - the 0th percentile within the state. This is a different, narrower cut than the nationwide percentiles above: it compares St. Mary only against its own state's cities, not the full US field.
Median Gross Rent
#218 of 317
29th percentile in Montana
Poverty Rate
#230 of 315
0th percentile in Montana
Bachelor's Degree or Higher
#69 of 317
78th percentile in Montana
Ranked by raw value (highest first); a higher rank is not automatically "better" for every measure, see each metric's own context above. This is a comparison within Montana only, not a livability score. See the methodology for the source and calculation.
Income distribution context
Median household income is not available for St. Mary in the current Census ACS release (common for very small places).
Key socioeconomic indicators
Bachelor's degree or higher (adults 25+) 34.3%
Census ACS S1501, educational attainment
Poverty rate (households below FPL) 0.0%
Census ACS S1701, poverty status
Labor force participation (adults 16+) 79.4%
Census ACS S2301, share of working-age residents in the labor force
Population
209
Median Income
N/A
Median Home Value
N/A
Median Age
22.0
Poverty Rate
0.0%
Labor force participation
79.4%
Bachelor's Degree+
34.3%
Commute Patterns
How workers travel to work, Census ACS 2023
Drive Alone
51.3%
Carpool
6.5%
Public Transit
0.0%
Walk
34.4%
Work from Home
7.8%
Based on 154 workers 16 and over.
Monthly Utility Costs
State-average estimates for Montana - EIA 2023 residential energy data
Electricity
$80
avg/month
Natural Gas
$55
avg/month
Water & Sewer
$40
avg/month
Total Utilities
$175
estimated/month
Estimates reflect Montana state averages. Actual costs vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.
Living Costs & Risk
Cost of living is a Montana state average from BEA; rent and hazard risk are county-level figures from HUD and FEMA for the county St. Mary sits in
Cost of Living Index
94.6
Below Average
US average = 100 · BEA RPP 2024
Typical 2-BR Rent
$1,275/mo
HUD Fair Market Rent
County-level FMR estimate
Natural Hazard Risk
51.5 / 100
Low
FEMA NRI composite score (county)
Similar Cities in Montana
Cities of a Similar Size Nationwide
Population-matched peers from other states, closest to St. Mary's 209 residents (Census ACS 5-Year 2023).
Race & Ethnicity Composition
City-level race and ethnicity, Census ACS 5-year 2023 (tables B02001, B03001), OMB Directive 15 categories.
How St. Mary compares to nearby Montana cities
Population + median household income, sourced from Census Bureau ACS 5-year B01001 (population) and B19013 (median household income).
| City | Population | Median Household Income |
|---|---|---|
| St. Mary (this city) | 209 | N/A |
| Highwood | 209 | $71,875 |
| West Glacier | 209 | $87,344 |
| Elliston | 208 | $41,719 |
Census ACS 5-year FIPS MT OMB Bulletin 23-01
What do people ask about St. Mary, MT?
What is the population of St. Mary, MT? +
St. Mary, MT has a population of 209 according to U.S. Census Bureau ACS 2023 estimates.
What is the cost of living in St. Mary? +
BEA does not publish a city-level cost-of-living figure for St. Mary; the closest available measure is the Montana state average, a cost of living index of 94.6 (U.S. average = 100), rated "Below Average" based on BEA Regional Price Parities 2024 data. Costs within Montana vary by metro area.
Source: U.S. Census Bureau ACS 5-Year 2023, Census ACS B08301/B08136, U.S. Energy Information Administration (EIA) 2023, BEA Regional Price Parities 2024, HUD Fair Market Rents 2026, FEMA National Risk Index.
Read our methodology - how this data is sourced, computed, and verified.
Primary sources: Census ACS, FBI UCR, NOAA Climate Normals, NCES.
Citation & verification links
Data sourced from the U.S. Census Bureau. See our methodology for details. Retrieved and formatted by PlainCitiesEvery figure on PlainCities is rendered directly from Census ACS source data, no number is typed in by an editor. This page draws directly on Census ACS source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.