ZIP code ranking · WY
Most Populous ZIP Codes in WY
The top 25 ZIP codes ranked by population in WY. The ranking pulls from the latest available data; ZIPs with implausible or incomplete data are excluded.
| Rank | ZIP | Where | Population |
|---|---|---|---|
| 1 | 82001 | Cheyenne, WY· Laramie County | 38,168 |
| 2 | 82009 | Ranchettes CDP, WY· Laramie County | 35,081 |
| 3 | 82604 | Casper, WY· Natrona County | 27,487 |
| 4 | 82901 | Rock Springs, WY· Sweetwater County | 27,198 |
| 5 | 82601 | Casper Mountain CDP, WY· Natrona County | 26,721 |
| 6 | 82718 | Gillette, WY· Campbell County | 26,619 |
| 7 | 82801 | Sheridan, WY· Sheridan County | 26,310 |
| 8 | 82007 | Cheyenne, WY· Laramie County | 21,704 |
| 9 | 82070 | Laramie, WY· Albany County | 20,144 |
| 10 | 82501 | Arapahoe CDP, WY· Fremont County | 19,413 |
| 11 | 82609 | Casper, WY· Natrona County | 18,714 |
| 12 | 83001 | Hoback CDP, WY· Teton County | 17,445 |
| 13 | 82072 | Laramie, WY· Albany County | 16,931 |
| 14 | 82716 | Gillette, WY· Campbell County | 16,817 |
| 15 | 82414 | Cody, WY· Park County | 16,582 |
| 16 | 82520 | Boulder Flats CDP, WY· Fremont County | 13,266 |
| 17 | 82435 | Ralston CDP, WY· Park County | 12,337 |
| 18 | 82935 | Green River, WY· Sweetwater County | 12,012 |
| 19 | 82240 | Torrington, WY· Goshen County | 9,667 |
| 20 | 82633 | Douglas, WY· Converse County | 9,317 |
| 21 | 82301 | Rawlins, WY· Carbon County | 8,180 |
| 22 | 82834 | Buffalo, WY· Johnson County | 7,588 |
| 23 | 82401 | Worland, WY· Washakie County | 7,067 |
| 24 | 82201 | Slater CDP, WY· Platte County | 6,245 |
| 25 | 82701 | Newcastle, WY· Weston County | 5,459 |