Spencer is an incorporated hamlet in Clark County, Idaho, United States. It serves as the base for the state's opal mine and is called the "Opal Capital of America": the mine proper is located 5–6 mil
Clark County is a rural county in the U.S. state of Idaho; its county seat and largest city is Dubois. As of the 2020 census, the population was 790, making it the least populous county in the state.
Spencer, Idaho
…Spencer is an incorporated hamlet in Clark County, Idaho, United States. It serves as the base for the state's opal mine and is called the "Opal Capital of America": the mine proper is located 5–6 miles…