ZIP codes starting with 831
- ZIP codes
- 18
- States
- WY
- Largest city
- Afton, WY
- Population
- 23,257
The first three digits of a ZIP code identify a sectional center facility — the postal processing plant that sorts mail for the area. It is a mail-routing grouping, not an administrative boundary.
Every ZIP code in 831xx
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
83101 | Kemmerer , WY | Standard | 3,731 | $76,947 | $191,200 |
83110 | Afton , WY | Standard | 5,198 | $86,731 | $381,100 |
83111 | Auburn , WY | Standard | 284 | $131,000 | — |
83112 | Bedford , WY | Standard | 1,033 | $158,913 | $570,800 |
83113 | Big Piney , WY | Standard | 2,431 | $75,385 | $282,100 |
83114 | Cokeville , WY | Standard | 635 | $85,536 | $212,500 |
83115 | Daniel , WY | Standard | 278 | — | $683,500 |
83116 | Diamondville , WY | Standard | 619 | $67,019 | $133,000 |
83118 | Etna , WY | Standard | 433 | $69,508 | $359,500 |
83119 | Fairview , WY | Standard | 31 | — | — |
83120 | Freedom , WY | Standard | 232 | $59,200 | $526,300 |
83121 | Frontier , WY | Standard | 0 | — | — |
83122 | Grover , WY | Standard | 895 | — | $422,100 |
83123 | La Barge , WY | Standard | 679 | $160,250 | $306,900 |
83124 | Opal , WY | Standard | 96 | $87,500 | — |
83126 | Smoot , WY | Standard | 837 | $111,172 | $463,900 |
83127 | Thayne , WY | Standard | 3,812 | $87,743 | $482,700 |
83128 | Alpine , WY | Standard | 2,033 | $112,476 | $868,600 |
Cite this page
zipcodes.pro. “ZIP codes starting with 831.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/831
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