Census ACS · 23 counties
Largest Counties in Wyoming
Wyoming has 23 counties with Census data available. The largest is Laramie County with a population of 100,661. County-level data is important because counties are the primary unit of local government in most states, responsible for courts, elections, public health, and infrastructure. Population distribution across counties reveals where growth is concentrated and where rural decline may be occurring.
Source: Census ACS 5-Year Estimates
| # | County | Population | Median Income |
|---|---|---|---|
| 1 | Weston County | 6,835 | $87,545 |
| 2 | Washakie County | 7,708 | $62,648 |
| 3 | Uinta County | 20,605 | $82,672 |
| 4 | Teton County | 23,358 | $112,681 |
| 5 | Sweetwater County | 41,786 | $76,464 |
| 6 | Sublette County | 8,806 | $82,791 |
| 7 | Sheridan County | 31,585 | $70,855 |
| 8 | Platte County | 8,606 | $66,299 |
| 9 | Park County | 30,109 | $70,533 |
| 10 | Niobrara County | 2,415 | $48,987 |
| 11 | Natrona County | 79,735 | $71,247 |
| 12 | Lincoln County | 20,158 | $86,092 |
| 13 | Laramie County | 100,661 | $77,884 |
| 14 | Johnson County | 8,602 | $63,905 |
| 15 | Hot Springs County | 4,618 | $64,375 |
| 16 | Goshen County | 12,587 | $64,882 |
| 17 | Fremont County | 39,472 | $64,646 |
| 18 | Crook County | 7,339 | $71,209 |
| 19 | Converse County | 13,759 | $79,164 |
| 20 | Carbon County | 14,549 | $66,721 |
| 21 | Campbell County | 47,018 | $95,253 |
| 22 | Big Horn County | 11,737 | $60,547 |
| 23 | Albany County | 37,713 | $59,881 |
More Rankings for Wyoming
Frequently Asked Questions
Laramie County is the #1 ranked county in Wyoming by population, with a value of 100,661 according to latest Census ACS data.
Wyoming has 23 counties tracked in latest Census ACS data.
All data comes from the American Community Survey (ACS) 5-Year estimates by the US Census Bureau.
Data from the American Community Survey 5-Year estimates. Covers all counties in Wyoming.
Source: U.S. Census Bureau ACS, 2026.