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zipcodes.pro — STATE/MT/COUNTY/FERGUS

Fergus County, MT ZIP codes

There are 9 ZIP codes in Fergus County, MT, in 9 towns, from 59032 to 59489. The largest are 59457 (Lewistown), 59464 (Moore) and 59032 (Grass Range).

The county seat is Lewistown.

ZIP codes
9
Towns
9
County seat
Lewistown
County FIPS
30027
State
Montana
Population
11,687
Median household income
$63,706
Land area
4,339 sq mi

Fergus County ZIP codes by town

Lewistown (county seat)
59457

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.

Map of Fergus County ZIP codes

590325942459430594415945159457594645947159489

The ZIP codes of Fergus 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.

Fergus County in numbers

About 11,687 people live in Fergus County, in 5,303 households, the 18th most populous of Montana's 56 counties. The median household income is $63,706 a year, 12% below the Montana median of $72,509 (US: $80,734). The median owner-occupied home is valued at $236,100 (37% below the Montana median), and median gross rent is $954 a month. The median age is 44.4; 24.0% of adults 25 and over hold a bachelor's degree or higher (35.2% across Montana); the average commute takes 18 minutes.

Population11,687Fergus11,687
Households5,303Fergus5,303
Median age44.4Fergus44.4Montana40.4US 38.9
Median household income$63,706Fergus$63,706Montana$72,509US $80,734
Median home value$236,100Fergus$236,100Montana$375,800US $332,700
Median gross rent$954Fergus$954Montana$1,081US $1,413
Bachelor's degree or higher24.0%Fergus24.0%Montana35.2%US 35.7%
Mean commute18.3 minFergus18.3 minMontana19.1 minUS 26.4 min
Population density3 / sq miFergus3 / 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 Fergus County

Largest towns in Fergus County
TownZIP codesPopulation
Lewistown 1 6,087
Winifred 1 263
Moore 1 224
Denton 1 193
Roy 1 129
Forest Grove 1 126
Grass Range 1 125
Hilger 1 123
Coffee Creek 1 61

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 Fergus County.

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

Every ZIP code in Fergus County, with figures

ZIP codes in Fergus County
ZIP City Type Population Median income Median home
59032 Grass Range , MT Standard 409 $42,000 $150,000
59424 Coffee Creek , MT Standard 103 $79,375 $294,100
59430 Denton , MT Standard 448 $76,875 $211,100
59441 Forest Grove , MT Standard 126 $62,344 —
59451 Hilger , MT Standard 123 $85,625 $214,300
59457 Lewistown , MT Standard 9,135 $64,762 $242,300
59464 Moore , MT Standard 597 $56,979 $263,600
59471 Roy , MT Standard 318 $65,156 $177,500
59489 Winifred , MT Standard 424 $64,637 $187,500

Cite this page

zipcodes.pro. “Fergus County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mt/county/fergus

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