| County | Rank | Change (2020) ↓ | 2025 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Crook County | 1 | 10.8% | 7,954 | 7,179 |
| Sheridan County | 2 | 7.64% | 33,375 | 31,005 |
| Albany County | 3 | 7.64% | 39,952 | 37,115 |
| Lincoln County | 4 | 7.29% | 21,091 | 19,658 |
| Park County | 5 | 5.65% | 31,342 | 29,666 |
| Big Horn County | 6 | 5.47% | 12,107 | 11,479 |
| Johnson County | 7 | 4.07% | 8,814 | 8,469 |
| Campbell County | 8 | 2.62% | 48,381 | 47,146 |
| Sublette County | 9 | 2.28% | 8,939 | 8,740 |
| Laramie County | 10 | 1.74% | 102,487 | 100,733 |
| Weston County | 11 | 1.28% | 6,904 | 6,817 |
| Fremont County | 12 | 1.15% | 39,642 | 39,190 |
| Goshen County | 13 | 0.73% | 12,608 | 12,517 |
| Natrona County | 14 | 0.69% | 80,852 | 80,300 |
| Uinta County | 15 | 0.28% | 20,518 | 20,461 |
| Hot Springs County | 16 | -0.48% | 4,598 | 4,620 |
| Converse County | 17 | -0.49% | 13,682 | 13,750 |
| Teton County | 18 | -0.89% | 23,176 | 23,384 |
| Washakie County | 19 | -0.98% | 7,588 | 7,663 |
| Platte County | 20 | -2.19% | 8,443 | 8,632 |
| Sweetwater County | 21 | -2.22% | 41,258 | 42,196 |
| Carbon County | 22 | -2.24% | 14,183 | 14,508 |
| Niobrara County | 23 | -7.26% | 2,275 | 2,453 |
Wyoming's counties show varied growth patterns from 2020 to 2025. Crook County leads with 10.8% annualized growth, followed by Sheridan County (7.64%) and Albany County (7.64%). The largest counties are Laramie County (102,487), Natrona County (80,852), and Campbell County (48,381). Of the 23 counties in Wyoming, 15 are growing while 8 have experienced population decline. Overall, counties averaged 1.85% annualized growth, with total population growing by 2.16% annually.
-0.05
-0.025
0
0.025
0.05
0.075