Big Horn County, MT ZIP codes
Big Horn County ZIP codes by town
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 Big Horn County ZIP codes
The ZIP codes of Big Horn 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.
Big Horn County in numbers
About 12,891 people live in Big Horn County, in 3,827 households, the 15th most populous of Montana's 56 counties. The median household income is $58,750 a year, 19% below the Montana median of $72,509 (US: $80,734). The median owner-occupied home is valued at $143,400 (62% below the Montana median), and median gross rent is $697 a month. The median age is 31.9; 17.8% of adults 25 and over hold a bachelor's degree or higher (35.2% across Montana); the average commute takes 20 minutes.
| Population | 12,891 |
|---|---|
| Households | 3,827 |
| Median age | 31.9 |
| Median household income | $58,750 |
| Median home value | $143,400 |
| Median gross rent | $697 |
| Bachelor's degree or higher | 17.8% |
| Mean commute | 19.6 min |
| Population density | 3 / 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 Big Horn County
| Town | ZIP codes | Population |
|---|---|---|
| Hardin | 1 | 3,742 |
| Crow Agency | 1 | 2,192 |
| Busby | 1 | 569 |
| Pryor | 1 | 497 |
| Wyola | 1 | 481 |
| Lodge Grass | 1 | 429 |
| Garryowen | 1 | 391 |
| Fort Smith | 1 | 78 |
| St. Xavier | 1 | 55 |
| Decker | 1 | 53 |
| Pompeys Pillar | 1 | 27 |
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 Big Horn County.
Not sure you are in Big Horn County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Big Horn County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
59016 | Busby , MT | Standard | 1,044 | $58,750 | $146,400 |
59022 | Crow Agency , MT | Standard | 2,307 | $53,083 | $57,800 |
59025 | Decker , MT | Standard | 53 | $36,500 | — |
59031 | Garryowen , MT | Standard | 391 | — | $107,000 |
59034 | Hardin , MT | Standard | 5,008 | $60,726 | $169,800 |
59035 | Fort Smith , MT | Standard | 180 | $51,726 | $139,400 |
59050 | Lodge Grass , MT | Standard | 1,338 | $62,500 | $112,500 |
59064 | Pompeys Pillar , MT | Standard | 211 | — | $289,800 |
59066 | Pryor , MT | Standard | 539 | $52,000 | $95,700 |
59075 | Saint Xavier , MT | Standard | 125 | $24,063 | $211,600 |
59089 | Wyola , MT | Standard | 801 | $62,870 | — |
Cite this page
zipcodes.pro. “Big Horn County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mt/county/big-horn
Underlying data is public domain or openly licensed — sources, vintages and licences.