Spencer, ID

View of Spencer, ID
Population
29
U.S. Census Population Estimates Program · 2025
Elevation
5,908 ft
USGS GNIS community points and 3DEP elevation · GNIS 2026-07-06; USGS 3DEP sampled 2026-07-23
Median Income
$74,219
U.S. Census American Community Survey 5-Year · 2024
General Quality
Overall rating out of 100

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About Spencer

Spencer is a tiny eastern Idaho community best known as the Opal Capital of America, tucked along Interstate 15 near the Montana border. Life here moves at a quiet, unhurried pace, surrounded by expansive open skies, high-desert plains, and easy access to outdoor recreation in the surrounding mountains. The famous opal mines just outside town still draw rockhounds each summer, giving this peaceful rural outpost a unique local character.

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