4th most populous of 23
With 41,273 residents in 2024, Sweetwater County ranks 4th by population among Wyoming's 23 counties and is home to 7.0% of the state's residents.
Sweetwater County is home to 41,273 people (2024 estimate) on 10,427 square miles of land. This page brings together official U.S. Census Bureau population estimates since 2000, the components of change—births, deaths and migration—American Community Survey indicators on income, housing, poverty and education, BEA economic accounts and BLS unemployment.
Key indicators
Population
41,273
July 1, 2024 estimate
2020 Census base
42,270
April 1, 2020
Change since 2020
−2.4%
2020–2024
Land area
10,427 mi²
27,006 km²
Population density
4.0 /mi²
2024 estimate ÷ land area
Births
426
Year to July 1, 2024
Deaths
389
Year to July 1, 2024
Natural change
+37
Births minus deaths, 2024
Net migration
−55
Domestic + international, 2024
Per capita personal income
$63,284
BEA, 2024
Gross domestic product
$4.0 billion
BEA, current dollars, 2024
Median household income
$75,034
ACS 2020–2024 5-year
Poverty rate
12.9%
ACS 2020–2024 5-year
Bachelor’s degree or higher
20.9%
Age 25+, ACS 2020–2024 5-year
Foreign-born residents
5.3%
ACS 2020–2024 5-year
Median home value
$251,400
ACS 2020–2024 5-year
Unemployment rate
3.4%
BLS annual average, 2024
Historical data
Pick an indicator to see its long-run evolution.
Population
2000–202441,273▲ 10%
U.S. Census Bureau: intercensal estimates 2000–2009, Vintage 2020 (2010–2019) and Vintage 2024 (2020–2024), July 1.
Data summary
| Indicator | Value | Year and source |
|---|---|---|
| Population estimate | 41,273 | 2024 · U.S. Census Bureau |
| Population, 2010 Census | 43,806 | 2010 · U.S. Census Bureau |
| Population, 2000 | 37,552 | July 1, 2000 · Census intercensal |
| Change since 2000 | +9.9% | 2000–2024 · Census |
| International migration | +91 | 2024 · Census Vintage 2024 |
| Domestic migration | −146 | 2024 · Census Vintage 2024 |
| Birth rate | 10.3 per 1,000 | 2024 · calculated |
| Death rate | 9.4 per 1,000 | 2024 · calculated |
| Population rank in Wyoming | 4th of 23 | 2024 · calculated |
| Per capita personal income | $63,284 | BEA, 2024 · official |
| Gross domestic product | $4.0 billion | BEA, current dollars, 2024 · official |
| Median household income | $75,034 | ACS 2020–2024 5-year · official |
| Poverty rate | 12.9% | ACS 2020–2024 5-year · official |
| Bachelor’s degree or higher | 20.9% | Age 25+, ACS 2020–2024 5-year · official |
| Foreign-born residents | 5.3% | ACS 2020–2024 5-year · official |
| Median home value | $251,400 | ACS 2020–2024 5-year · official |
| Median gross rent | $911/month | ACS 2020–2024 5-year · official |
| Median age | 37.9 years | ACS 2020–2024 5-year · official |
| Households | 17,502 | ACS 2020–2024 5-year · official |
| Owner-occupied homes | 74.6% | ACS 2020–2024 5-year · official |
Sweetwater County in context
Comparable indicators for Sweetwater County, Wyoming and the United States.
| Indicator | County | Wyoming | U.S. | Reference |
|---|---|---|---|---|
| Population change 2020–2024 | −2.4% | +1.9% | +2.6% | Census Vintage 2024 |
| Birth rate (per 1,000) | 10.3 | 10.3 | 10.6 | 2024 |
| Death rate (per 1,000) | 9.4 | 9.6 | 9.1 | 2024 |
| Net migration rate (per 1,000) | -1.3 | 3.7 | 8.2 | 2024 |
| Population density (/mi²) | 4.0 | 6.1 | 96.3 | 2024 |
| Per capita personal income | $63,284 | $86,477 | $73,204 | BEA, 2024 |
| Median household income | $75,034 | $76,176 | $80,734 | ACS 2020–2024 5-year |
| Poverty rate | 12.9% | 10.5% | 12.5% | ACS 2020–2024 5-year |
| Bachelor’s degree or higher | 20.9% | 30.6% | 35.7% | Age 25+, ACS 2020–2024 5-year |
| Foreign-born residents | 5.3% | 3.5% | 14.1% | ACS 2020–2024 5-year |
| Median home value | $251,400 | $309,700 | $332,700 | ACS 2020–2024 5-year |
| Median gross rent | $911/month | $992/month | $1,413/month | ACS 2020–2024 5-year |
| Median age | 37.9 years | 39.1 years | 38.9 years | ACS 2020–2024 5-year |
| Owner-occupied homes | 74.6% | 71.8% | 65.2% | ACS 2020–2024 5-year |
Cities & towns
2 cities · choose how to order them
Rock Springs
22,900 residents
Green River
11,800 residents
Did you know? Sweetwater County
A quarter century of change
Its population went from 37,552 in 2000 to 41,273 in 2024, a change of +9.9%, compared with +18.9% for Wyoming as a whole.
Births and deaths
In the year to July 2024 the county recorded 426 births and 389 deaths, so births outnumbered deaths by 37.
Peak population in 2013
Annual Census estimates since 2000 put the county's highest population at 45,189 in 2013. The 2024 figure is 3,916 lower.
13th in density
Sweetwater County has about 4.0 residents per square mile of land, ranking 13th of 23 counties; Wyoming averages 6.1.
Household income rank
With a median household income of $75,034 (ACS 2020–2024 5-year), the county ranks 10th of 23 Wyoming counties; the state median is $76,176.
Size of the economy
Its economy produced $4.0 billion of GDP in 2024 (BEA), 5th largest among 23 Wyoming counties.
Latest economic growth
Real GDP fell 7.8% in 2024, adjusted for inflation (BEA, chained 2017 dollars).
Sources and methodology
- U.S. Census Bureau — County population totals and components, Vintage 2024
- U.S. Census Bureau — County estimates 2010–2020
- U.S. Census Bureau — Intercensal estimates 2000–2010
- U.S. Census Bureau — Gazetteer files (land area)
- U.S. Census Bureau — American Community Survey 2020–2024 5-year
- U.S. Bureau of Economic Analysis — Regional economic accounts
- U.S. Bureau of Labor Statistics — LAUS