Wyoming Counties Map: Click All 23 Counties

How many counties are in Wyoming?

Wyoming has 23 counties. 38 states have more, and 11 have fewer.

Wyoming has 23 counties. Laramie County holds both the capital, Cheyenne, and the most people. Sweetwater County, in the southwest, is the largest. Yellowstone National Park lies mostly in Park and Teton counties in the northwest corner.

How Wyoming's counties were formed

Wyoming's first counties were drawn by Dakota Territory in 1867 and 1868, as the Union Pacific Railroad crossed the region: Laramie and Carter (later Sweetwater). Wyoming Territory was organized in 1868, and the original five counties ran in long strips from Montana to Colorado. Teton and Sublette counties, both created in 1921, are the newest of the 23.

Wyoming regions and the counties in each

Wyoming's regions follow mountains and basins. Southeast Wyoming includes Laramie (Cheyenne), Albany (Laramie) and Goshen. The I-80 corridor across the south runs through Carbon, Sweetwater and Uinta. Northwest Wyoming holds Park, Teton and Sublette counties, with Yellowstone, Grand Teton and the Wind River Range. North-central Wyoming is the Bighorn Basin (Big Horn, Washakie, Hot Springs) with the Bighorn Mountains, and Northeast Wyoming includes Campbell County's coal mines and Crook County, home of Devils Tower.

Notable places on the Wyoming county map

Gannett Peak, the state's highest point at 13,804 feet, sits on the line between Fremont and Sublette counties in the Wind River Range. Yellowstone, which became the world's first national park in 1872, lies mostly in Park and Teton counties, and Devils Tower in Crook County was the first national monument, in 1906. Wyoming has the fewest people of any state, so its 23 counties average more than 4,000 square miles each.

Wyoming counties map: the biggest and smallest

Sweetwater County is the largest county in Wyoming, with 10,427 square miles of land, about 11% of the state. That's more land than 9 whole states, including Connecticut, Delaware, Hawaii and others. Hot Springs County is the smallest, at 2,004 square miles.

The smallest counties by land area are Hot Springs County (2,004 sq mi), Platte County (2,082 sq mi) and Uinta County (2,082 sq mi).

Which counties in Wyoming have the most people?

Laramie County has the most people, about 101,783 in the Census Bureau's July 2024 estimate, or 17% of everyone in Wyoming. The three biggest counties together hold 39% of the state's 587,618 people. Niobrara County has the fewest, about 2,301.

The most crowded is Laramie County, with about 38 people per square mile. The emptiest is Niobrara County, with less than one person per square mile. Comparing the two is a quick way to show children that a big county on the map isn't always a big county in people.

What county is Cheyenne in?

Cheyenne, the capital of Wyoming, is in Laramie County. It's also the county with the most people. Wyoming is called the Equality State, and it became the 44th state in 1890.

Counties on the Wyoming border

Learning the edge of the map first gives children a frame to fill in. Wyoming shares a border with Colorado, Idaho, Montana, Nebraska, South Dakota and Utah.

How Wyoming's counties compare with other states

Wyoming ranks 9th among the 50 states in land area and 50th in population. Its average county covers about 4,221 square miles and holds about 25,549 people. Across the 50 states, the average county-level area covers about 1,139 square miles and holds about 109,381 people, so Wyoming's counties are bigger than usual in size. Bigger counties mean fewer names to learn for a state this size.

Landmarks for learning the counties of Wyoming

• Laramie County (Cheyenne) is the southeast corner.
• Park and Teton counties hold Yellowstone and Grand Teton national parks in the northwest.
• Natrona County (Casper) is in the middle of the state.

With 23 counties, you can take on the whole map at once in a Practice round. Then print the Wyoming county map worksheet to check that it sticks on paper.

All 23 Wyoming counties

Every county on the map, A to Z, with its land area and July 2024 population estimate.

Wyoming geography for homeschoolers

Pair this map with the West states and capitals quiz and the US states quiz. If you teach at home, see wyoming homeschool laws, and check wyoming esa to see whether a program may help pay for Wyoming history and geography curriculum. Each program decides what it covers.