County Maps US

Wyoming County Map

Wyoming has 23 counties. Together they cover 97,089 sq mi of land and 588,753 people.

Neighbouring areas are given different colours so their shared borders read clearly. These colours carry no data.

Boundaries from the 2025 Census cartographic boundary file, generalised so that no point moves by more than half a pixel at this width. Select any area to open its page.
Counties
23
39th most of the 51 states and DC
Population
588,753
51st largest
Land area
97,089
square miles
Density
6.1
people per square mile, computed

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. Retrieved 30 August 2026.

Download this map

Free to use and redistribute. The boundaries are public-domain Census Bureau data; attribution to County Maps US is appreciated but not required.

Satellite view

Aerial imagery of Wyoming with the state boundary drawn on top. County lines are not drawn here: at this scale they would bury the picture, and the map above already carries them.

Aerial view of 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 800 by 645 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.

The extremes of Wyoming

Most populous

Laramie County

102,938

Least populous

Niobrara County

2,341

Largest by land area

Sweetwater County

10,427 sq mi

Smallest by land area

Hot Springs County

2,004 sq mi

Most densely populated

Laramie County

38.3 per sq mi

Highest median household income

Teton County

$124,172

Which is the largest county in Wyoming? The answer depends on whether you mean area or population.

The counties, by shape

Every one, drawn to its own scale so the small ones stay recognisable. Shape alone is not a size comparison; the table below carries the areas.

What the map does not say

The counties of Wyoming are nowhere near the same size. Sweetwater County covers 10,427 sq mi of land, 5.2 times the 2,004 sq mi of Hot Springs County. People are spread even less evenly: Laramie County packs 38.3 per sq mi while Niobrara County holds 0.89 per sq mi.

They were not drawn in one sitting either. Sweetwater County dates to 1867, and the boundaries were still being redrawn when Sublette County was organised in 1923, 56 years later. Founding years come from Wikidata and are worth checking against the county's own history before citing.

Water is part of the picture too: 5.2% of Teton County is water, the most in the state, which is why its land area and total area disagree. And 12 of the 23 counties here share their names with counties in other states, so searching by name alone can land in the wrong place; the A to Z index lists every duplicate.

All 23 counties of Wyoming

Sortable on any column. This table doubles as the text alternative to the map above: every area is a link, in alphabetical order, whether or not the map renders.

The 23 counties of Wyoming, with population, land area, density, median household income, county seat and FIPS code.
NamePopulationLand areaDensityMedian incomeSeatFIPS
Albany County38,5584,274 sq mi9.0 per sq mi$61,917Laramie56001
Big Horn County12,0243,137 sq mi3.8 per sq mi$62,101Basin56003
Campbell County48,1454,802 sq mi10.0 per sq mi$89,869Gillette56005
Carbon County14,0137,898 sq mi1.8 per sq mi$70,511Rawlins56007
Converse County13,8244,255 sq mi3.3 per sq mi$81,558Douglas56009
Crook County7,8522,854 sq mi2.8 per sq mi$79,637Sundance56011
Fremont County39,4649,184 sq mi4.3 per sq mi$64,904Lander56013
Goshen County12,6402,226 sq mi5.7 per sq mi$58,929Torrington56015
Hot Springs County4,6002,004 sq mi2.3 per sq mi$61,250Thermopolis56017
Johnson County8,9084,154 sq mi2.1 per sq mi$64,871Buffalo56019
Laramie County102,9382,686 sq mi38.3 per sq mi$80,173Cheyenne56021
Lincoln County21,1804,075 sq mi5.2 per sq mi$89,330Kemmerer56023
Natrona County80,5265,341 sq mi15.1 per sq mi$72,156Casper56025
Niobrara County2,3412,626 sq mi0.89 per sq mi$64,113Lusk56027
Park County31,1716,939 sq mi4.5 per sq mi$73,035Cody56029
Platte County8,6342,081 sq mi4.2 per sq mi$67,718Wheatland56031
Sheridan County33,2412,523 sq mi13.2 per sq mi$71,388Sheridan56033
Sublette County8,9294,886 sq mi1.8 per sq mi$83,597Pinedale56035
Sweetwater County41,26710,427 sq mi4.0 per sq mi$75,034Green River56037
Teton County23,3333,997 sq mi5.8 per sq mi$124,172Jackson56039
Uinta County20,7282,082 sq mi10.0 per sq mi$82,980Evanston56041
Washakie County7,5972,239 sq mi3.4 per sq mi$65,714Worland56043
Weston County6,8402,398 sq mi2.9 per sq mi$89,509Newcastle56045

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; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Looking for Wyoming County?

Wyoming is also the name of 3 counties in other states. If you meant one of those rather than the state of Wyoming, they are listed here.

The ten most populous

  1. Laramie County102,938
  2. Natrona County80,526
  3. Campbell County48,145
  4. Sweetwater County41,267
  5. Fremont County39,464
  6. Albany County38,558
  7. Sheridan County33,241
  8. Park County31,171
  9. Teton County23,333
  10. Lincoln County21,180

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