This U.S. Geological Survey (USGS) data release provides a digital geospatial database for the geologic map of the central Pioneer Mountains, Blaine and Custer counties, central Idaho (Dover, 1983). Attribute tables and geospatial features (points, lines, and polygons) conform to the Geologic Map Schema (USGS NCGMP, 2020) and represent the geologic map as published in USGS Miscellaneous Investigations Series I-1319. The 276,000-acre map area represents the geology at a publication scale of 1:48,000.