Sweetwater County's 2026 population is estimated at 41,243, reflecting a -0.04% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Sweetwater County is the 4th largest county in Wyoming. The 2010 population was 43,580 and has grown -5.36% since 2010.
Data after 2023 is projected based on recent change
Overall: 37.9 years
Female: 37.9 years
Male: 37.8 years
There are 31,165 adults, (6,131 of whom are seniors) in Sweetwater County.
Female: 20,234 (48.7%)
Male: 21,308 (51.3%)
The racial composition of Sweetwater County includes 80.75% White, 6.14% other race, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 33,545 | 80.75% |
| Two or more races | 4,453 | 10.72% |
| Other race | 2,552 | 6.14% |
| Black or African American | 566 | 1.36% |
| Native American | 226 | 0.54% |
| Asian | 197 | 0.47% |
| Native Hawaiian or Pacific Islander | 3 | 0.01% |
Sweetwater County 's average per capita income is $52,763. Household income levels show a median of $75,034. The poverty rate stands at 12.86%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $110,111 | - |
| Families | $98,067 | $120,838 |
| Households | $75,034 | $97,925 |
| Non Families | $43,297 | $55,594 |
Average Income
Median Household Income
Poverty Rate