The Madelyn Helling Library is the main branch of the Nevada County Library system, located near the Eric Rood Government Center in Nevada City.
The Grass Valley Library - Royce Branch is an historic Carnegie library located in the heart of downtown Grass Valley.
The Truckee Library, located in Eastern Nevada County, is located near the Joseph Government Center and Tahoe Forest Hospital.
The Penn Valley Library is located on Pleasant Valley Road across from the main entrance to Lake Wildwood.
The Bear River Library is located on Combie Road in the Lake Center Plaza. The new library location opened in 2024.
The Doris Foley Library for Historical Research is a non-circulating branch of the Nevada County Library system.