Wyoming Counties and Historical Facts

Wyoming County records vary widely from county to county in both quality and quantity. Some have been carefully preserved while others have been much abused and neglected. Some Wyoming records have simply disappeared.

For genealogists doing research in Wyoming there is no effective replace for an on-site search of county courthouse records.

Wyoming County Records

There are 23 counties that exist in Wyoming. Each one holds records that may include: Land, Estates, Taxes, Vital Records, Divorces, Naturalizations, Voter Registration, Court Records. Other records may also be included. However, other resources do need to be consulted.

Map of Wyoming Counties
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Map of Wyoming Counties

The Wyoming State Archives holds several homestead land records and territorial records for the state of Wyoming. However, county clerk offices also hold several important records, especially land records beginning at the date that the county was formed.

Probate and court records, meanwhile, can be found in the offices of the district court clerks. Although, many are also on file with the Wyoming State Archives.

Although many counties have early marriage records on file, there are no death or birth records available at the county level. Some marriage records even exist from the time before Wyoming was incorporated.

It’s always best to consult the Wyoming State Archives first. They can provide information on which records they hold and which records must be researched in specific county offices. See also a list of links to county and county seat government run websites.

List of Wyoming Extinct Counties

Wyoming has 3 counties that no longer exist because they were discontinued, renamed or merged with another county.

A lot of these counties were established and disbanded within the 19th century; county borders have changed very little since 1900.

These are important for genealogy research purposes. Pay attention where the courthouse records went to if the county was eliminated or joined with some other county.

See the History of Wyoming Counties for more details.

List of Wyoming Counties with Burned Courthouses

Wyoming burned county courthouse
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There have been no reported damage to Wyoming courthouses or major record loses.

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List of Wyoming Counties

County Date Formed Parent County County Seat
Albany 1868 One of the original five counties Laramie
Big Horn 1890 Sheridan County, Johnson County, and Fremont County Basin
Campbell 1911 Weston County and Crook County Gillette
Carbon 1868 One of the original five counties. Rawlins
Converse 1888 Albany County and Laramie County Douglas
Crook 1875 Laramie County and Albany County Sundance
Fremont 1884 Sweetwater County Lander
Goshen 1911 Laramie County Torrington
Hot Springs 1911 Fremont County, Big Horn County, and Park County Thermopolis
Johnson 1875 Carbon County and Sweetwater County Buffalo
Laramie 1867 One of the original five counties Cheyenne
Lincoln 1911 Uinta County Kemmerer
Natrona 1888 Carbon County Casper
Niobrara 1911 Converse County Lusk
Park 1909 Big Horn County Cody
Platte 1911 Laramie County Wheatland
Sheridan 1888 Johnson County Sheridan
Sublette 1921 Fremont County and Lincoln County Pinedale
Sweetwater 1867 One of the original five counties Green River
Teton 1921 Lincoln County Jackson
Uinta 1869 One of the original five counties Evanston
Washakie 1911 Big Horn County Worland
Weston 1890 Crook County Newcastle
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