Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/MT/COUNTY/SWEET-GRASS

Sweet Grass County, MT ZIP codes

Sweet Grass County, MT has 4 ZIP codes, in 4 towns: 59011, 59033, 59052 and 59055. 1 more crosses into it from a neighbouring county: 59069.

The county seat is Big Timber.

ZIP codes
4
Partly in it
1 more
Towns
4
County seat
Big Timber
County FIPS
30097
State
Montana
Population
3,720
Median household income
$77,000
Land area
1,856 sq mi

Sweet Grass County ZIP codes by town

Big Timber (county seat)
59011

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Sweet Grass County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Sweet Grass County.

Map of Sweet Grass County ZIP codes

59011590335905259055

The ZIP codes of Sweet Grass County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Sweet Grass County in numbers

About 3,720 people live in Sweet Grass County, in 1,552 households, the 39th most populous of Montana's 56 counties. The median household income is $77,000 a year, 6% above the Montana median of $72,509 (US: $80,734). The median owner-occupied home is valued at $330,100 (12% below the Montana median), and median gross rent is $1,149 a month. The median age is 47.0; 24.4% of adults 25 and over hold a bachelor's degree or higher (35.2% across Montana); the average commute takes 25 minutes.

Population3,720Sweet Grass3,720
Households1,552Sweet Grass1,552
Median age47.0Sweet Grass47.0Montana40.4US 38.9
Median household income$77,000Sweet Grass$77,000Montana$72,509US $80,734
Median home value$330,100Sweet Grass$330,100Montana$375,800US $332,700
Median gross rent$1,149Sweet Grass$1,149Montana$1,081US $1,413
Bachelor's degree or higher24.4%Sweet Grass24.4%Montana35.2%US 35.7%
Mean commute24.5 minSweet Grass24.5 minMontana19.1 minUS 26.4 min
Population density2 / sq miSweet Grass2 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Sweet Grass County

Largest towns in Sweet Grass County
TownZIP codesPopulation
Big Timber 1 1,611
Mc Leod 1 186
Greycliff 1 158
Melville 1 40

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Sweet Grass County.

Not sure you are in Sweet Grass County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Sweet Grass County, with figures

ZIP codes in Sweet Grass County
ZIP City Type Population Median income Median home
59011 Big Timber , MT Standard 3,167 $78,000 $328,100
59033 Greycliff , MT Standard 231 $71,635 —
59052 Mc Leod , MT Standard 186 $60,547 $1,107,100
59055 Melville , MT Standard 40 $163,750 —

Cite this page

zipcodes.pro. “Sweet Grass County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mt/county/sweet-grass

Underlying data is public domain or openly licensed — sources, vintages and licences.