Sweetwater County, Wyoming Genealogy

United States Wyoming  Sweetwater County

County Courthouse

 * County Seat 80 West Flaming Gorge Way Green River, Wyoming 82935 (307) 872-3732 Official County Website: http://www.co.sweet.wy.us/

Parent County
Formed from the western half of Laramie county 27 Dec 1867 (Laramie county originally encompassed the entire state). Originally named Carter county and original county seat South Pass City. The county was renamed Sweetwater by the first Wyoming Legislative Assembly. The county seat was moved to Green River in 1873. 

Neighboring Counties

 * Carbon
 * Daggett County, Utah
 * Fremont
 * Lincoln
 * Moffat County, Colorado 
 * Sublette
 * Summit County, Utah
 * Uinta

Cemeteries

 * Mountain View Cemetery, Rock Springs BillionGraves. Possibly part of Rock Springs City Cemetery.

Church
LDS Ward and Branch Records


 * Green River, McKinnon, Reliance, Rock Springs,Rock Springs 1st, Rock Springs 2nd, Superior and Winton.

Land

 * BLM General Land Office Records

Migration
Early migration routes to and from for European and African American settlers included:


 * South Pass
 * Green River
 * Oregon Trail 1830s to 1890s from western Missouri to Oregon City, Oregon
 * Sublette-Greenwood_Cutoff 1844 from South Pass, Wyoming to Fort Hall, Idaho
 * California Trail 1846 to 1869 from western Missouri to northern California
 * Mormon Trail 1846 to 1869 from Nauvoo, Illinois to Salt Lake City, Utah
 * Cherokee Trail 1850 from Salina, Oklahoma to Grainger/Fort Bridger, Wyoming
 * Union Pacific Railroad 1925 from Grainger, Wyoming via Boise to Portland, Oregon

Newspapers

 * Searchable digitized newspaper from Rock Springs, Green River and Bryan, WY at the Wyoming Newspaper Project.

Probate
The bulk of the probate case files from the 1870's to the 1940's have been transferred to the Wyoming State Archives in Cheyenne. Check their website for additional details.

Vital Records
924 marriages from 7 Jun 1870 to 25 Jun 1904 are listed on the Western States Marriage Index.

Marriage index, formation of county to May, 2011 available as a spreadsheet at Sweetwater County GenWeb.

Societies and Libraries

 * Sweetwater County Historical Museum 3 E. Flaming Gorge Way Green River 82935
 * Rock Springs Historical Museum Various holdings including sporadic Polk city directories and high school yearbooks.
 * Sweetwater County Library System Polk directories, microfilm of Green River and Rock Springs newspapers.

Family History Centers

 * Introduction to LDS Family History Centers
 * Green River Wyoming Family History Center
 * Rock Spring Wyoming Family History Center

Web Sites

 * USGenWeb project. May have maps, name indexes, history or other information for this county. Select the state, then the county.
 * Genealogy Trails: Sweetwater County Site. A Volunteer project dedicated to making genealogy records free to the public. Includes links to births, marriages and deaths; newspaper stories obituaries, censuses, military data, and more.