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Big Arm, MT
Full City Profile · Montana · Lake County County
1.4
/5.0
F
Poor
142
Population
26/sq mi density
45°F
Avg Temperature
273 sunny days/yr
432
Violent Crime/100K
5,400 property/100K
F
Overall
1.4 / 5.0
Below average overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
432 violent crimes/100K (14% above avg)
D
Education
1.9 / 5.0
11.2% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-49.8%
283 → 142
over 10 years
Annual Pop. Growth
-6.66%
Compound annual growth rate
Population Over Time
Total population for Big Arm across each available Census ACS release.
Median Household Income Over Time
Median household income reported by U.S. Census ACS. Values are nominal (not adjusted for inflation).
Projected 2030
Simple projections extrapolating the 2013–2023 compound annual growth rate forward. These are mathematical extensions of recent trends, not forecasts — real outcomes depend on migration, policy and economic shifts.
Projected Population 2030
88
-54 from 2023 (142)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 283 | — | $122,661 | — |
| 2015 | 230 | -18.7% | $76,154 | -37.9% |
| 2017 | 242 | +5.2% | — | — |
| 2019 | 169 | -30.2% | — | — |
| 2021 | 82 | -51.5% | — | — |
| 2023 | 142 | +73.2% | — | — |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.