The Hermosa Branch Library is one of the two branches of the Custer County Library that serves 370 residents in the City of Hermosa. The library maintains 24,800 books and serial volumes, 1,200 audio, 2,700 videos, and over 11,000 electronic books. It records a total circulation of 45,800 items each year. The Hermosa Branch provides meeting and study rooms, computers for public use, WiFi, laptops, scanner, photocopier, and storytimes events.