Sheridan County, MT ZIP codes
There are 10 ZIP codes in Sheridan County, MT, in 10 towns, from 59211 to 59275. The largest are 59254 (Plentywood), 59247 (Medicine Lake) and 59275 (Westby).
The county seat is Plentywood.
- ZIP codes
- 10
- Towns
- 10
- County seat
- Plentywood
- County FIPS
30091- State
- Montana
- Population
- 3,669
- Median household income
- $70,147
- Land area
- 1,677 sq mi
Sheridan County ZIP codes by town
- Plentywood (county seat)
- 59254
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 Sheridan County ZIP codes
The ZIP codes of Sheridan 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.
Sheridan County in numbers
About 3,669 people live in Sheridan County, in 1,476 households, the 40th most populous of Montana's 56 counties. The median household income is $70,147 a year, 3% below the Montana median of $72,509 (US: $80,734). The median owner-occupied home is valued at $124,000 (67% below the Montana median), and median gross rent is $746 a month. The median age is 43.1; 26.2% of adults 25 and over hold a bachelor's degree or higher (35.2% across Montana); the average commute takes 13 minutes.
| Population | 3,669 |
|---|---|
| Households | 1,476 |
| Median age | 43.1 |
| Median household income | $70,147 |
| Median home value | $124,000 |
| Median gross rent | $746 |
| Bachelor's degree or higher | 26.2% |
| Mean commute | 13.2 min |
| Population density | 2 / 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 Sheridan County
| Town | ZIP codes | Population |
|---|---|---|
| Plentywood | 1 | 1,654 |
| Antelope | 1 | 298 |
| Westby | 1 | 290 |
| Raymond | 1 | 258 |
| Medicine Lake | 1 | 213 |
| Dagmar | 1 | 144 |
| Outlook | 1 | 51 |
| Homestead | 1 | 27 |
| Reserve | 1 | 19 |
| Redstone | 1 | 4 |
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 Sheridan County.
Not sure you are in Sheridan County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Sheridan County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
59211 | Antelope , MT | Standard | 298 | — | — |
59219 | Dagmar , MT | Standard | 144 | $108,750 | $109,800 |
59242 | Homestead , MT | Standard | 55 | $128,750 | $154,200 |
59247 | Medicine Lake , MT | Standard | 310 | $73,750 | $110,400 |
59252 | Outlook , MT | Standard | 70 | $65,750 | $215,600 |
59254 | Plentywood , MT | Standard | 1,822 | $68,750 | $164,400 |
59256 | Raymond , MT | Standard | 258 | $36,607 | $80,600 |
59257 | Redstone , MT | Standard | 132 | — | — |
59258 | Reserve , MT | Standard | 184 | $148,750 | $158,300 |
59275 | Westby , MT | Standard | 436 | $49,141 | $83,300 |
Cite this page
zipcodes.pro. “Sheridan County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mt/county/sheridan
Underlying data is public domain or openly licensed — sources, vintages and licences.