ZIP code · Lewistown · Montana · United States
ZIP code 59457 — Lewistown
ZIP code 59457 serves Lewistown, Montana.
- Postal code
- 59457Single source Value from one source, not cross-checked.
- City
- Lewistown
- County
- Fergus
- State
- Montana
- Country
- United States
- Coordinates
- 47.0563, -109.4203 — precision precise (locality)
View on OpenStreetMap - Population
- 9,215 (ZCTA, ACS 5-year)
- Median household income
- $59,682
- Median age
- 46.3
- Time zone
- America/Denver (UTC−7 / UTC−6 DST)
- Area code
- 406Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Nearby localities
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Data generated on 2026-08-21. Methodology · Report an error on this page