First three digits · Wyoming
ZIP Codes Starting with
21 ZIP codes start with 826, sorted at the Casper, WY (SCF 826) sectional center (USPS labeling list L005, effective October 1, 2026) in Wyoming: 18 residential ZIP codes across 5 counties and 3 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 826 mean?
The first digit, 8, is one of ten national areas (Arizona, Colorado, Idaho, New Mexico, Nevada, Utah and Wyoming). The first three, 826, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 826 to the Casper, WY (SCF 826) facility. The last two digits pick the delivery area. By residents, the largest town names among the 826 ZIP codes are Casper, Douglas, Glenrock, Evansville, Mills and Shoshoni.
The same facility sorts 5 prefixes, 85 ZIP codes in all: 824, 825, 826, 827, 828.
Where are the 826 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 826
| County | ||||||
|---|---|---|---|---|---|---|
| 82601 | Casper | Natrona County | 26,721 | 56 | $68k | $249k |
| 82602 | Casper | Natrona County | PO Box or unique | – | – | – |
| 82604 | Casper | Natrona County | 27,487 | 26 | $79k | $289k |
| 82605 | Casper | Natrona County | PO Box or unique | – | – | – |
| 82609 | Casper | Natrona County | 18,714 | 287 | $71k | $294k |
| 82615 | Shirley Basin | Carbon County | PO Box or unique | – | – | – |
| 82620 | Alcova | Natrona County | 164 | 0 | – | – |
| 82630 | Arminto | Natrona County | no residents | 0 | – | – |
| 82633 | Douglas | Converse County | 9,317 | 4 | $82k | $297k |
| 82635 | Edgerton | Natrona County | 87 | 12 | $35k | – |
| 82636 | Evansville | Natrona County | 4,259 | 32 | $87k | $299k |
| 82637 | Glenrock | Converse County | 4,425 | 7 | $80k | $279k |
| 82638 | Hiland | Natrona County | 116 | 2 | – | – |
| 82639 | Kaycee | Johnson County | 782 | 1 | $72k | $194k |
| 82640 | Linch | Johnson County | 175 | 7 | $250k+ | $611k |
| 82642 | Lysite | Fremont County | 33 | 0 | $80k | – |
| 82643 | Midwest | Natrona County | 267 | 19 | $78k | $64k |
| 82644 | Mills | Natrona County | 2,098 | 2,581 | $54k | $176k |
| 82646 | Natrona | Natrona County | no residents | 0 | – | – |
| 82648 | Powder River | Natrona County | 24 | 0 | – | – |
| 82649 | Shoshoni | Fremont County | 1,152 | 2 | $69k | $155k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.