Teton County, Wyoming

A county in Wyoming, ranked 9 of 23 by population.

CountyFIPS 56039

Within Wyoming

Teton County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Jackson, the county seat, located via the 2025 Census Gazetteer.

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Population: 23,333; -48 (-0.2%) since 2020
Land area: 3,997; square miles. A further 5.2% of the total area is water
Population density: 5.8; people per square mile, computed rather than published
County seat: Jackson; Seat of county government.
Established: 1922; 103 years ago
Largest city: Jackson town; Population 10,720.

Satellite view

Aerial imagery of Teton County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Teton County, Wyoming from the USGS National Map, with its boundary outlined — Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 446 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Teton County ranks

Position among the 23 counties of Wyoming, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

Measure	Value	In Wyoming	Nationally
Population	23,333	9th of 23	1,677th of 3,144
Land area	3,997 sq mi	12th of 23	120th of 3,144
Population density	5.8 per sq mi	7th of 23	2,733rd of 3,144
Median household income	$124,172	1st of 23	45th of 3,143

Full data for Teton County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
Measure	Value	Source and vintage
Population	23,333	Vintage 2025 Population Estimates
Population in 2020	23,381	Vintage 2025 Population Estimates
2020 estimates base?	23,330	Vintage 2025 Population Estimates
Land area	3,997 sq mi	2025 Gazetteer Files
Water area	220.4 sq mi	2025 Gazetteer Files
Total area	4,217 sq mi	2025 Gazetteer Files
Population density?	5.8 per sq mi	Computed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income	$124,172	American Community Survey 2020-2024 5-Year Estimates
Median home value	$1,633,900	American Community Survey 2020-2024 5-Year Estimates
Median age	40.2	American Community Survey 2020-2024 5-Year Estimates
Households	9,830	American Community Survey 2020-2024 5-Year Estimates
Housing units	13,658	American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths: +121; 197 births, 76 deaths
Net migration: -135; More people moved out than moved in.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 8 areas bordering Teton County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering area	State	Shared border	Population
Park County	Wyoming	108 mi	31,171
Sublette County	Wyoming	42 mi	8,929
Fremont County	Wyoming	38 mi	39,464
Fremont County	Idaho	34 mi	14,208
Teton County	Idaho	33 mi	13,254
Lincoln County	Wyoming	29 mi	21,180
Gallatin County	Montana	13 mi	128,740
Bonneville County	Idaho	13 mi	135,771

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 23 counties of Wyoming

Open the interactive Wyoming county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.