Platte County, Wyoming

Platte County sits in southeastern Wyoming, right in the heart of cattle country. Wide-open prairies stretch across the landscape, while the North Platte River winds through the county, bringing water and life to the surrounding grasslands.

Wheatland, the county’s largest town, has that classic small-town Wyoming feel. Farming and ranching remain the backbone of the local economy, supported by hardworking families who have built their lives around the land.

The famous Oregon Trail once passed through this area, and you can still spot historic wagon ruts left behind by pioneers. Guernsey State Park surrounds the Guernsey Reservoir and offers plenty of opportunities to enjoy the outdoors. With its rich pioneer history and strong rural roots, Platte County feels like a true piece of old Wyoming.

Category Details
County Name Platte County
County Seat Wheatland
Cities, Towns, and Communities Wheatland, Glendo, Chugwater, Guernsey
Interstates and Highways I-25, US-26, WY-34, WY-320
Etymology Named after the North Platte River, which flows through the county
FIPS Code 56-031
Total Area (Land and Water) 2,111 sq mi (Land: 2,084 sq mi; Water: 27 sq mi)
Time Zone Mountain Time Zone (MT)
State Wyoming
Coordinates 42.1118° N, 104.9623° W
Major Landmarks Guernsey State Park, Register Cliff, Fort Laramie National Historic Site
Adjacent Counties (and Direction) Niobrara County (Northeast), Goshen County (East), Laramie County (South), Albany County (West), Converse County (Northwest)
Population Approximately 9,000
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