Wyoming County Map

All 23 counties with county seats and major cities

Wyoming has 23 counties, seven of them created by the legislature of 1911. This map shows all 23 counties and their county seats. Tap a county for details, or download the free printable map below.

Wyoming county map showing all 23 counties with county names and county seats
Map of Wyoming counties with county seats (dots) and the state capital, Cheyenne (star). Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).

Updated October 4, 2026 · Boundaries: U.S. Census Bureau 2025 · Population: Census estimates for July 1, 2025

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Wyoming county facts

Number of counties
23
Largest by land area
Sweetwater County 10,427 sq mi
Smallest by land area
Hot Springs County 2,004.4 sq mi
Most people
Laramie County 102,938
Fewest people
Niobrara County 2,341
Fastest growing since 2020
Crook County +9.3%
Highest median household income
Teton County $124,172
Oldest county
Laramie County est. 1867
Newest county
Sublette County est. 1921
State capital
Cheyenne Laramie County

List of 23 Wyoming counties

Sorted A–Z. Click a column to sort, or a name to show it on the map. Download as CSV

CountyCounty seatPopulation 2025Change since 2020Land area (sq mi)Median incomeEstablishedFIPS
Albany CountyLaramie38,558+4%4,274$61,917186856001
Big Horn CountyBasin12,024+4.4%3,137$62,101–56003
Campbell CountyGillette48,145+2.4%4,802$89,869191156005
Carbon CountyRawlins14,013−3.6%7,898$70,511186856007
Converse CountyDouglas13,824+0.5%4,255$81,558188856009
Crook CountySundance7,852+9.3%2,855$79,637187556011
Fremont CountyLander39,464+0.6%9,184$64,904188456013
Goshen CountyTorrington12,640+1.1%2,226$58,929191156015
Hot Springs CountyThermopolis4,600−0.4%2,004$61,250191156017
Johnson CountyBuffalo8,908+5.4%4,154$64,871187556019
Laramie CountyCheyenne102,938+2.4%2,686$80,173186756021
Lincoln CountyKemmerer21,180+8.2%4,075$89,330191156023
Natrona CountyCasper80,526+0.7%5,341$72,156188856025
Niobrara CountyLusk2,341−5.2%2,626$64,113191156027
Park CountyCody31,171+5.2%6,939$73,035190956029
Platte CountyWheatland8,634+0.4%2,082$67,718191156031
Sheridan CountySheridan33,241+7.5%2,523$71,388188856033
Sublette CountyPinedale8,929+2.3%4,887$83,597192156035
Sweetwater CountyGreen River41,267−2.4%10,427$75,034186756037
Teton CountyJackson23,333+0%3,997$124,172192156039
Uinta CountyEvanston20,728+1.4%2,082$82,980186956041
Washakie CountyWorland7,597−1.1%2,239$65,714191156043
Weston CountyNewcastle6,840−0%2,398$89,509189056045

Wyoming county map with cities

The largest cities in Wyoming and the counties they are in. Cities that cross a county line list every county, the main one first. To find any smaller town, use the search box above.

Wyoming county map with cities and county seats
Wyoming counties with county seat towns. Download the full-size image
CityCountyPopulation 2025
CheyenneLaramie County66,507
CasperNatrona County58,771
GilletteCampbell County34,024
LaramieAlbany County32,284
Rock SpringsSweetwater County22,936
SheridanSheridan County20,015
EvanstonUinta County11,705
Green RiverSweetwater County11,450
RivertonFremont County10,910
JacksonTeton County10,720
CodyPark County10,377
RawlinsCarbon County7,745
LanderFremont County7,379
PowellPark County6,574
DouglasConverse County6,469
TorringtonGoshen County6,205
BuffaloJohnson County4,733
WorlandWashakie County4,730
MillsNatrona County4,634
WheatlandPlatte County3,516
NewcastleWeston County3,349
Bar NunnNatrona County3,012
EvansvilleNatrona County2,875
ThermopolisHot Springs County2,721
GlenrockConverse County2,418
KemmererLincoln County2,353
LovellBig Horn County2,351
AftonLincoln County2,256
LymanUinta County2,216
Star Valley RanchLincoln County2,074

Printable Wyoming county maps (free PDF, PNG, SVG)

Every map is free to print and share. The PDFs are vector files with real text, so they stay sharp at any size and you can search them for a county name. Use 11×17 (tabloid) for the most readable labels.

Wyoming county map with all 23 counties labeled

Color map with names

All 23 counties labeled, county seats marked. Letter and 11×17 PDF, high-resolution PNG, editable SVG.

Wyoming county map with cities

Map with cities

Counties with their county seat towns and major cities.

Blank outline map of Wyoming counties

Blank outline map

County lines only, no names. For quizzes, coloring and your own notes.

Wyoming county map with numbers

Numbered map with key

A number in every county with an alphabetical key.

Black and white Wyoming county map

Black and white

Labeled map that prints well on any printer.

Map of Wyoming counties shaded by population density

Population map

Counties shaded by population density (2025 estimates).

Data and GIS files

The county table as CSV, and the boundaries as GeoJSON and KML (Google Earth, Google My Maps).

When Wyoming's 23 counties were created

Wyoming's first county was created before Wyoming existed. Dakota Territory set up Laramie County on January 8, 1867, and it covered nearly all of the future state. After Wyoming Territory was organized in 1868, its counties were long strips that ran from the northern to the southern border, and many residents lived far from a county seat. People in Jackson Hole, for example, had to go to Evanston, 200 miles away, for trials. The state constitution tied new counties to wealth and people: a new county needed $2 million in taxable property and at least 1,500 inhabitants. Growth around the new railroads and irrigation projects led the legislature to create seven counties in 1911, among them Hot Springs, Lincoln and Platte. Sublette and Teton, created in 1921, were the last; a special law let Teton form before it met the legal minimums.

County maps of neighboring states

Wyoming counties: questions and answers

How many counties are in Wyoming?
Wyoming has 23 counties.
What is the largest county in Wyoming?
By land area, Sweetwater County is the largest (10,427 sq mi). By population, Laramie County is the largest, with 102,938 people (2025 estimate).
What is the smallest county in Wyoming?
Hot Springs County is the smallest by land area (2,004.4 sq mi). Niobrara County has the fewest people: 2,341 (2025 estimate).
What is the wealthiest county in Wyoming?
By median household income, Teton County ranks first with $124,172 (American Community Survey 2020–2024). The lowest is Goshen County at $58,929.
What county is Cheyenne in?
Cheyenne is in Laramie County.
What county is Casper in?
Casper is in Natrona County.
What county is Gillette in?
Gillette is in Campbell County.
How can I see county lines on Google Maps?
Google Maps does not draw county lines. Download the KML file from the printable maps section above and import it into Google My Maps (Create a new map › Import) or open it in Google Earth to see every Wyoming county boundary on top of Google's map.
Can I use this map for free?
Yes. The maps and files on this page are free to print, share and use in your own work, including commercial projects, under the CC BY 4.0 licence. Please credit “WhichCounty (whichcounty.com)”.

Use this map on your site

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Sources and methodology

Found an error? Tell us. Last data update: October 4, 2026.