Wyoming Population By County in 2021
Updated on June 16, 2025.
Based on the US Census Vintage data estimates, in 2021, the population of Wyoming was 579,636. Among all Wyoming counties, Laramie had the highest population (100,843), followed by Natrona (79,642), and Campbell (46,547). Niobrara was the least populated county (2,413).
Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.
You can see similar information for other states and by state for the United States.
Related Topics: Wyoming Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage).
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Wyoming Population By County in 2021
Wyoming Population By County in 2021
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| County | Population | % of State Population |
|---|---|---|
| Albany | 37859 | 6.53 |
| Big Horn | 11641 | 2.01 |
| Campbell | 46547 | 8.03 |
| Carbon | 14711 | 2.54 |
| Converse | 13670 | 2.36 |
| Crook | 7309 | 1.26 |
| Fremont | 39408 | 6.80 |
| Goshen | 12571 | 2.17 |
| Hot Springs | 4595 | 0.79 |
| Johnson | 8629 | 1.49 |
| Laramie | 100843 | 17.40 |
| Lincoln | 20174 | 3.48 |
| Natrona | 79642 | 13.74 |
| Niobrara | 2413 | 0.42 |
| Park | 30146 | 5.20 |
| Platte | 8679 | 1.50 |
| Sheridan | 31663 | 5.46 |
| Sublette | 8729 | 1.51 |
| Sweetwater | 41630 | 7.18 |
| Teton | 23613 | 4.07 |
| Uinta | 20690 | 3.57 |
| Washakie | 7727 | 1.33 |
| Weston | 6747 | 1.16 |