Ranking of Wyoming Counties By Population in 2021
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2021, the Population for Wyoming was 579.64K. Among all Wyoming counties, Laramie County had the highest population (100.84K), followed by Natrona County (79.64K), and Campbell County (46.55K).
The chart below shows the top 10 counties, and the table below shows the ranking of all Wyoming counties.
You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.
Related Topics: Wyoming Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage), 2021 Census.
See this for other years:
Ranking of Wyoming Counties By Population in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Laramie County | 100843 |
| 2 | Natrona County | 79642 |
| 3 | Campbell County | 46547 |
| 4 | Sweetwater County | 41630 |
| 5 | Fremont County | 39408 |
| 6 | Albany County | 37859 |
| 7 | Sheridan County | 31663 |
| 8 | Park County | 30146 |
| 9 | Teton County | 23613 |
| 10 | Uinta County | 20690 |
| 11 | Lincoln County | 20174 |
| 12 | Carbon County | 14711 |
| 13 | Converse County | 13670 |
| 14 | Goshen County | 12571 |
| 15 | Big Horn County | 11641 |
| 16 | Sublette County | 8729 |
| 17 | Platte County | 8679 |
| 18 | Johnson County | 8629 |
| 19 | Washakie County | 7727 |
| 20 | Crook County | 7309 |
| 21 | Weston County | 6747 |
| 22 | Hot Springs County | 4595 |
| 23 | Niobrara County | 2413 |