First three digits · Wyoming
ZIP Codes Starting with
18 ZIP codes start with 827, sorted at the Casper, WY (SCF 826) sectional center (USPS labeling list L005, effective October 1, 2026) in Wyoming: 16 residential ZIP codes across 3 counties and 2 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 827 mean?
The first digit, 8, is one of ten national areas (Arizona, Colorado, Idaho, New Mexico, Nevada, Utah and Wyoming). The first three, 827, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 827 to the Casper, WY (SCF 826) facility. The last two digits pick the delivery area. By residents, the largest town names among the 827 ZIP codes are Gillette, Newcastle, Moorcroft, Sundance, Rozet and Wright.
The same facility sorts 5 prefixes, 85 ZIP codes in all: 824, 825, 826, 827, 828.
Where are the 827 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 827
| County | ||||||
|---|---|---|---|---|---|---|
| 82701 | Newcastle | Weston County | 5,459 | 3 | $91k | $231k |
| 82710 | Aladdin | Crook County | 246 | 1 | $54k | $489k |
| 82711 | Alva | Crook County | 254 | 3 | $59k | – |
| 82712 | Beulah | Crook County | 163 | 2 | – | $2M+ |
| 82714 | Devils Tower | Crook County | 196 | 9 | – | – |
| 82715 | Four Corners | Weston County | PO Box or unique | – | – | – |
| 82716 | Gillette | Campbell County | 16,817 | 14 | $73k | $236k |
| 82717 | Gillette | Campbell County | PO Box or unique | – | – | – |
| 82718 | Gillette | Campbell County | 26,619 | 17 | $105k | $309k |
| 82720 | Hulett | Crook County | 995 | 2 | $80k | $246k |
| 82721 | Moorcroft | Crook County | 2,955 | 4 | $73k | $277k |
| 82723 | Osage | Weston County | 140 | 1 | $116k | $312k |
| 82725 | Recluse | Campbell County | 32 | 0 | – | – |
| 82727 | Rozet | Campbell County | 2,040 | 5 | $98k | $344k |
| 82729 | Sundance | Crook County | 2,331 | 4 | $89k | $308k |
| 82730 | Upton | Weston County | 1,422 | 2 | $72k | $194k |
| 82731 | Weston | Campbell County | 47 | 0 | – | – |
| 82732 | Wright | Campbell County | 1,671 | 22 | $78k | $239k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.