| Name | Sweetwater County |
| State | Wyoming |
| FIPS Code | 56037 |
| County Seat | Green River |
| Timezone | Mountain Daylight Time (MDT) |
| Population (2024) | 41,288 |
| Population Growth Rate(2020-2024) | -2.38% |
| Majority Ethnicity | White 81.09% |
| Public School Majority Ethnicity | White 71% |
| Partisan Voting Index | Strongly Republican:+26 |
| Unemployment Rate (May 2026) | 5.2% |
| Sales Tax Rate (2025) | 6% |
| Area Code(s) | 307 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 81.09% |
| African American | 1.17% |
| Hispanic | 16.31% |
| Asian | 0.68% |
| Native American | 0.75% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 71.35% |
| African American | 0.83% |
| Hispanic | 22.63% |
| Asian | 0.48% |
| Native American | 0.54% |
| Hawaiin/Pacific Islander | 0.16% |