Postal reference / United States

59011Big Timber, Montana

ZIP code 59011 is a United States postal code for Big Timber, Montana. Its county association is Sweet Grass County. The map reference point is at 45.8283, -109.9631.

State / territory: Montana
Recorded place name: Big Timber
County association: Sweet Grass
Estimated coordinate: 45.8283, -109.9631
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ZIP prefix: 590 · 75 ZIP codes share it
Data source: GeoNames postal reference, snapshot September 26, 2026

GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.

Area

Land area: 936.359 sq mi (2023 Census Gazetteer)

Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.

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Browse the other 403 ZIP codes recorded for Montana, sorted by code with place and county.

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Nearby ZIP code reference points

ZIP code	Place	State	County association	Miles
59033	Greycliff	MT	Sweet Grass	9.7
59082	Springdale	MT	Park	14.2
59052	Mc Leod	MT	Sweet Grass	16.1
59055	Melville	MT	Sweet Grass	21.0
59069	Reed Point	MT	Stillwater	22.0
59061	Nye	MT	Stillwater	27.6
59047	Livingston	MT	Park	31.2
59018	Clyde Park	MT	Park	31.7

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