Sweetwater County, Wyoming Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 4th-largest in Wyoming
The population of Sweetwater County, Wyoming is 41,786 as of the 2023 American Community Survey, making it the 4th-largest county in Wyoming. The median household income is $76,464, the median home value is $242,900, and the median age is 37.4.
The population of Sweetwater County has declined 5.3% since 2010 (43,580 → 41,273), a -0.39% annualized rate.
41,786
Population
-0.39%
Annual growth
4
People / sq mi
$76,464
Median Income
$242,900
Median Home Value
Sweetwater County covers 10,427 sq mi of land at 4.0 people per square mile.
About Sweetwater County, WY
What sets Sweetwater County apart is where people work — remote work is unusually rare here, at 2.8% versus 14.0% nationally. With 41,786 residents, Sweetwater County is a county in Wyoming. It is the #4-largest of all counties in Wyoming nationally.
The typical household earns $76,464 a year, near the US median of $78,538. Poverty runs at 10.9%, below the national 12.4%. A typical home is worth $242,900, with typical rent around $913.
Roughly 20.4% of adults have a bachelor’s, below the national 35.0%. Home-based work is uncommon, at 2.8%, below the national 14.0%, and the average commute runs about 21 minutes each way.
Sweetwater County Population History (2010-2024)
The county of Sweetwater County had a population of 43,580 in 2010 and 41,273 in 2024, a -5.3% growth over 14 years. The peak was 45,189 in 2013. Average annual growth rate: -0.38%.
41,273
Population (2024)
43,580
Population (2010)
45,189
Peak (2013)
-0.38%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 43,580 |
| 2011 | 44,000 |
| 2012 | 45,032 |
| 2013 | 45,189 |
| 2014 | 44,996 |
| 2015 | 44,780 |
| 2016 | 44,319 |
| 2017 | 43,663 |
| 2018 | 43,188 |
| 2019 | 42,917 |
| 2020 | 42,196 |
| 2021 | 41,630 |
| 2022 | 41,322 |
| 2023 | 41,288 |
| 2024 | 41,273 |
Race & Ethnicity
| White | 82.4% |
| Black or African American | 1.2% |
| Asian | 0.1% |
| Hispanic or Latino (any race) | 2.6% |
| Two or More Races | 0.0% |
Age & Sex
37.4
Median Age
48.8%
Female
51.2%
Male
14.1%
Age 65+
Age Distribution
Children (under 15): 20.7% · Seniors (65+): 14.1%
Income & Poverty
| Median household income | $76,464+$1,649 vs state |
| Mean household income | $98,608 |
| Per-capita income | $40,988 |
| Poverty rate | 10.9%+3.8% vs state |
| Unemployment rate | 3.9% |
| Employment-to-population | 63.0% |
Top Industries by Employment
The largest employment sector in Sweetwater County is professional & business services, accounting for 22.2% of workers.
How residents commute
2.4%
Drive alone
1.8%
Carpool
79.2%
Public transit
2.8%
Work from home
21.0 min
Avg commute
Housing
$242,900$-42,200 vs state
Median home value
$913
Median rent
74.0%
Homeownership rate
19,226
Total housing units
87.7%
Occupied
12.3%
Vacant
26.0%
Renter-occupied
Social & access
87.1%
With health insurance
95.3%
With broadband internet
47.8%
Foreign-born
9.2%
Veterans (18+)
15.5%
With a disability
91.3%
Speak language other than English at home
Education
92.5%
High School+
20.4%
Bachelor's+
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Part of Wyoming
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County rankings
Frequently Asked Questions
Sweetwater County, Wyoming has a population of 41,786 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 4th-largest county in Wyoming. Population density is 4 people per square mile.
The population of Sweetwater County has declined 5.3% since 2010 (43,580 → 41,273), a -0.39% annualized rate.
The median household income in Sweetwater County, Wyoming is $76,464, with mean (average) household income of $98,608 and per-capita income of $40,988. 10.9% of residents live below the federal poverty level.
In Sweetwater County, the largest racial and ethnic groups are White (82.4%), Hispanic or Latino (2.6%), Black or African American (1.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Sweetwater County, Wyoming is 37.4 years. Residents are 48.8% female and 51.2% male.
The median home value in Sweetwater County is $242,900 and median monthly rent is $913. 74.0% of occupied housing units are owner-occupied. The county has 19,226 total housing units, 12.3% of which are vacant.
The largest employment sector in Sweetwater County, Wyoming is professional, scientific, and management services, employing 22.2% of workers. The unemployment rate is 3.9%.
Cheyenne is among the largest cities associated with Sweetwater County, Wyoming, with a population of 64,976.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.