Boulder, MT ZIP code
The ZIP code for Boulder, Montana is 59632. It is in Jefferson County.
- Population in these ZIPs
- 2,557
- Avg. median income
- $68,800population-weighted
- Typical home value
- $344,800population-weighted
- Metro area
- Helena, MT
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Boulder, MT ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 59632 | 2,557 | $68,750 | $344,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Boulder
- Jefferson City 13 mi
- Clancy 19 mi
- Basin 20 mi
- Toston 20 mi
- Cardwell 23 mi
- Whitehall 24 mi
- Winston 26 mi
- East Helena 28 mi
- Three Forks 29 mi
- Helena 31 mi
- Elliston 31 mi
- Fort Harrison 31 mi
Frequently asked questions
What is the ZIP code for Boulder, MT?
The ZIP code for Boulder, MT is 59632.
What county is Boulder, Montana in?
Boulder ZIP codes are in Jefferson County.