Neighbors -
Adams County
Valley County
Boise County
Ada County
Canyon County
Payette County
Washington County

Gem Co. map
Sharon McConnel,
Gem County Coordinator

Research Links


The area now known as Gem County was first part of Boise County (1863). When Ada County was formed in 1864, it included portions of what are now Gem and Canyon Counties. When Canyon County was formed in 1891 it included a portion that later became southern Gem County. Gem County as we know it today was created March 1915 from Canyon County and Boise County. (see Book 1, page 33 map showing old Boise/Canyon county line and Westview Mining District (Pearl). The map was filed in Canyon County Oct. 27, 1897, and certified Nov. 11, 1915 when we became Gem County.)

1870 Ada Co. census
1880 & 1900 census at ISU
1870 & 1880 non-population census
1930 Gross & Pearl precincts
1940 census page images at National Archives
1940 enumeration district maps - Once there select the "State", and go to "County" and then click on "Get ED Map Images" for entire county
Census Finder

Homestead Records

Government Land Office records: Patents (homesteads, cash sale and livestock) & maps -
GLO Records

Marriage Records

BYUI Western States Marriage Index

Death Records

Index for on-site records
Death Records Index 1911 - 1951 (US GenWeb Archives)
Boise County newspaper death notices (Gem Co. was originally part of Boise Co.)
Find A Grave
SS Death Index
VA Gravesite Locator
Legacy Obituary Finder

Other Aids & Projects

American History & Genealogy Project/Idaho
Family Group Sheet Project
Family Search includes 1880 census transcription, extracted marriage records, submitted family sheets, new wiki
GenForum messageboards
Cousin Connect
Cyndi's List
Rootsweb Resources:   Idaho
We Relate wiki
Civil War Records
currency converter at

Geography, Geology and Map Links

1895 Atlas

Historic topo maps Idaho State University Digital Atlas
Idaho Geological Survey
USGS index of Geographic Names
Gem County Maps (present-day)
Idaho Department of Lands, Gem Guide

Trapper Journals

Fur trappers passed through here as early as 1818 and Ross explored Squaw Creek in 1824 -
Alexander Ross' Journal, 1824
John Work's Journal, 1830-31

Oregon Trail

The Goodale North Oregon Trail variant passed through Gem County -
"Goodale North" Oregon Trail Variant
The Oregon Trail (includes journals)
OT at National Park Service
Oregon-California Trail Assoc.

Civilian Conservation Corps

There were five camps in Gem County
CCC crew working at Black Canyon Dam
Idaho PTV transcript
CCC Legacy

Other Links

Boise County Sentinel at Salmon Public Library, 1912 & 1916, published at Sweet; plus other publications
Council Valley Museum includes newspaper abstracts from 1877 to 1950
Central and Western Idaho, a Resume of the Resources of Four Counties, Ada, Alturas, Boise and Washington Counties, 1886
Census Quick Facts
Gem County - Idaho Government
Gem County Chamber of Commerce
Idaho Post Offices
Idaho State Historical Society  ::   Idaho State Historical Society Reference Series,
History of the Payette River
Idaho Meanderings, Idaho from late 1800's/early 1900's, with an emphasis on Gov. Steunenberg
South Fork Companion History Blog
History of Idaho Logging

Suggested Reading & References

Old Queries

Updated August 2017

Volunteers        USGenWeb Archives        Rootsweb messageboard

Copyright © 2009 - Sharon McConnel. All Rights Reserved.