Demographics of Sweetwater County, Wyoming

Sweetwater County, Wyoming had 41,267 people on July 1, 2025, by the Census Bureau’s estimate: −927 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Sweetwater County, in four figures

41,267
Population: July 1, 2025, Vintage 2025 estimate.; −2.2%
Change since July 2020: −927 people.; 37.9 ±0.6
Median age: ACS 2020–⁠2024.; $75,034 ±$3,808
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Sweetwater County, Wyoming's population shrank 2.2% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Sweetwater County, Wyoming's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Sweetwater County, Wyoming's population shrank 2.2% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Sweetwater County, Wyoming's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	42,194	100.0	100.0
2021	41,636	98.7	100.2
2022	41,319	97.9	100.7
2023	41,294	97.9	101.6
2024	41,350	98.0	102.5
2025	41,267	97.8	103.1

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Population of Sweetwater County, Wyoming on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	42,194	−74	+18	+1	−90
2021	41,636	−558	+69	+17	−631
2022	41,319	−317	0	+3	−313
2023	41,294	−25	+63	+85	−169
2024	41,350	+56	+39	+140	−124
2025	41,267	−83	+40	+41	−167

Age, 2020–2024

The median age is 37.9 ±0.6: for men 37.8 ±0.7 and for women 37.9 ±1.0. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Sweetwater County by age, ACS 2020–2024
Age	People	Share	Wyoming	United States
Under 5	2,294 ±158	5.5% ±0.4	5.4% ±0.1	5.6% ±<0.1
5 to 17	8,083 ±468	19.5% ±1.1	17.2% ±0.3	16.3% ±<0.1
18 to 24	3,671 ±339	8.8% ±0.8	9.0% ±0.2	9.1% ±<0.1
25 to 44	11,273 ±497	27.1% ±1.2	26.1% ±0.3	26.9% ±<0.1
45 to 64	10,090 ±448	24.3% ±1.1	23.8% ±0.3	24.8% ±<0.1
65 and over	6,131 ±478	14.8% ±1.2	18.5% ±0.3	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $75,034 ±$3,808, and income per person $41,511 ±$2,907, in 2024 dollars. The median is $76,176 ±$1,168 in Wyoming and $80,734 ±$166 in the United States.

Households by income

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Households in Sweetwater County by income, ACS 2020–2024
Household income	Households	Share	Wyoming	United States
Under $25,000	2,499 ±405	14.3% ±2.3	14.3% ±0.6	14.6% ±<0.1
$25,000 to $49,999	3,179 ±447	18.2% ±2.5	18.0% ±0.6	16.7% ±<0.1
$50,000 to $74,999	3,068 ±439	17.5% ±2.5	17.0% ±0.6	15.5% ±<0.1
$75,000 to $99,999	2,311 ±341	13.2% ±1.9	13.7% ±0.5	12.6% ±<0.1
$100,000 to $149,999	3,233 ±361	18.5% ±2.0	18.9% ±0.6	17.5% ±<0.1
$150,000 to $199,999	1,830 ±315	10.5% ±1.8	9.5% ±0.5	9.6% ±<0.1
$200,000 or more	1,382 ±273	7.9% ±1.6	8.5% ±0.5	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Sweetwater County by age, ACS 2020–2024
Age	Below poverty	Rate	Wyoming	United States
All ages	5,271 ±923	12.9% ±2.3	10.5% ±0.6	12.5% ±0.1
Under 18	1,649 ±423	16.0% ±4.0	11.7% ±0.9	16.1% ±0.1
18 to 59	2,833 ±468	12.8% ±2.1	10.8% ±0.6	11.6% ±0.1
60 and over	789 ±204	9.1% ±2.3	8.8% ±0.6	11.0% ±<0.1

Housing, 2020–2024

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Housing in Sweetwater County, ACS 2020–2024
Measure	Sweetwater County	Wyoming	United States
Housing units	19,289 ±56	277,141 ±187	143,775,355 ±10,234
Occupied	90.7% ±1.8	87.8% ±0.5	89.9% ±0.1
Vacant	9.3% ±1.8	12.2% ±0.6	10.1% ±0.1
Owner occupied	74.6% ±2.2	71.8% ±0.6	65.2% ±0.3
Renter occupied	25.4% ±2.6	28.2% ±0.6	34.8% ±0.1
Median home value	$251,400 ±$9,650	$309,700 ±$3,824	$332,700 ±$236
Median gross rent	$911 ±$35	$992 ±$17	$1,413 ±$2
Median year built	1980 ±1	1981 ±2	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Sweetwater County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Wyoming	United States
Hispanic or Latino	6,991 ±0	16.8% ±<0.1	10.7% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	31,890 ±329	76.8% ±0.8	81.4% ±0.2	57.4% ±<0.1
Black alone, not Hispanic	542 ±86	1.3% ±0.2	0.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	197 ±79	0.5% ±0.2	0.8% ±0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	74 to 314	0.2% to 0.8%	1.6% ±0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 9	0% to < 0.1%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	96 to 596	0.2% to 1.4%	0.7% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	1,379 ±326	3.3% ±0.8	4.0% ±0.2	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Sweetwater County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Wyoming	United States
Born in the state	19,214 ±877	46.3% ±2.1	41.6% ±0.6	57.3% ±<0.1
Born in another state	19,662 ±885	47.3% ±2.1	54.0% ±0.6	26.9% ±<0.1
Born a citizen outside the states	483 ±167	1.2% ±0.4	0.9% ±0.1	1.7% ±<0.1
Born abroad	2,183 ±370	5.3% ±0.9	3.5% ±0.2	14.1% ±<0.1
Naturalized citizens	736 ±226	1.8% ±0.5	1.6% ±0.1	7.4% ±<0.1
Not citizens	1,447 ±356	3.5% ±0.9	1.9% ±0.2	6.8% ±<0.1

Sweetwater County among the counties of Wyoming

4th of 23 by population, July 2025. Every one is listed on the Wyoming page.

Counties of Wyoming near Sweetwater County in population, July 2025
County	July 2025	Change since 2020
Laramie County	102,938	+2.2%
Natrona County	80,526	+0.3%
Campbell County	48,145	+2.1%
Sweetwater County	41,267	−2.2%
Fremont County	39,464	+0.7%
Albany County	38,558	+3.9%
Sheridan County	33,241	+7.2%
Park County	31,171	+5.1%
Teton County	23,333	−0.2%

Elsewhere on the site

Rankings this appears in

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — counties and Puerto Rico municipios, with components of change and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026