Sweetwater County, WY ZIP codes
There are 12 ZIP codes in Sweetwater County, WY, in 11 towns, from 82322 to 82945. The largest are 82901 (Rock Springs), 82935 (Green River) and 82932 (Farson).
The county seat is Green River.
- ZIP codes
- 12
- Towns
- 11
- County seat
- Green River
- County FIPS
56037- State
- Wyoming
- Population
- 41,542
- Median household income
- $75,034
- Land area
- 10,427 sq mi
- Area code
- 307
- Metro area
- Rock Springs
Sweetwater County ZIP codes by town
- Green River (county seat)
- 82935
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 Sweetwater County ZIP codes
The ZIP codes of Sweetwater 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.
Sweetwater County in numbers
About 41,542 people live in Sweetwater County, in 17,502 households, the 4th most populous of Wyoming's 23 counties. The median household income is $75,034 a year, about the same as the Wyoming median of $76,176 (US: $80,734). The median owner-occupied home is valued at $251,400 (19% below the Wyoming median), and median gross rent is $911 a month. The median age is 37.9; 20.9% of adults 25 and over hold a bachelor's degree or higher (30.6% across Wyoming); the average commute takes 24 minutes.
| Population | 41,542 |
|---|---|
| Households | 17,502 |
| Median age | 37.9 |
| Median household income | $75,034 |
| Median home value | $251,400 |
| Median gross rent | $911 |
| Bachelor's degree or higher | 20.9% |
| Mean commute | 23.8 min |
| Population density | 4 / 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 Sweetwater County
| Town | ZIP codes | Population |
|---|---|---|
| Rock Springs | 2 | 23,127 |
| Green River | 1 | 11,581 |
| Reliance | 1 | 572 |
| Wamsutter | 1 | 269 |
| Granger | 1 | 257 |
| Mc Kinnon | 1 | 221 |
| Superior | 1 | 177 |
| Bairoil | 1 | 149 |
| Farson | 1 | 68 |
| Little America | 1 | 19 |
| Point Of Rocks | 1 | 9 |
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 Sweetwater County.
Not sure you are in Sweetwater County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Sweetwater County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
82322 | Bairoil , WY | Standard | 149 | $40,250 | $23,700 |
82336 | Wamsutter , WY | Standard | 269 | $57,298 | $98,700 |
82901 | Rock Springs , WY | Standard | 27,198 | $69,954 | $248,500 |
82902 | Rock Springs , WY | No street area | — | — | — |
82929 | Little America , WY | Standard | 19 | — | — |
82932 | Farson , WY | Standard | 997 | $87,632 | — |
82934 | Granger , WY | Standard | 285 | $83,375 | $117,000 |
82935 | Green River , WY | Standard | 12,012 | $87,993 | $263,400 |
82938 | Mc Kinnon , WY | Standard | 221 | $105,323 | $437,100 |
82942 | Point Of Rocks , WY | Standard | 9 | — | — |
82943 | Reliance , WY | Standard | 187 | — | — |
82945 | Superior , WY | Standard | 196 | $68,036 | — |
Cite this page
zipcodes.pro. “Sweetwater County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/wy/county/sweetwater
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