Explore Grass Valley local geography, civic resources and voter guides, with dated official population and registration facts for Nevada County.
At a glance: Grass Valley is an incorporated city in Nevada County. Population: 13,238 (California Department of Finance estimate as of January 1, 2026). Registered voters: 8,678 (California Secretary of State, as of September 4, 2026).
Grass Valley spreads across rolling Sierra foothills, with a historic downtown surrounded by wooded residential slopes. Memorial Park provides central recreation space, while the Grass Valley Library–Royce Branch supplies county library services. Nearby Empire Mine State Historic Park interprets the area's mining landscape. Grass Valley is an incorporated city in Nevada County. Grass Valley incorporated in 1893.
No. Empire Mine State Historic Park is managed through California State Parks.
The Grass Valley Library–Royce Branch is part of Nevada County's library system.
Nevada County Elections provides registration and current election information.
8,678 (California Secretary of State, as of September 4, 2026).
CA Slates began with shared voter guides in 2012 and expanded into its current publication family and connected program.