Garden Valley is an unincorporated census-designated place in Boise County, Idaho, United States. As of the 2010 census, its population was 394. The mountain setting and recreation opportunities attract visitors from the Boise area. Life there during the pioneer days was quite harsh and economic opportunity was based on logging, mining, and ranching. I…Garden Valley is an unincorporated census-designated place in Boise County, Idaho, United States. As of the 2010 census, its population was 394. The mountain setting and recreation opportunities attract visitors from the Boise area. Life there during the pioneer days was quite harsh and economic opportunity was based on logging, mining, and ranching. In later years there was work as hunting guides.
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