List of state highways in California

State Routes in California
Standard California state route shields, variously identified by the state as the shape of a miner's spade, to honor the California Gold Rush,[1] and an acorn shape.[2]
Highway names
Interstates	Interstate XX (I-XX)
US Highways	U.S. Route XX (US XX)
State	State Route XX (SR XX)
System links
State highways in California Interstate US State Scenic History Pre‑1964 Unconstructed Deleted Freeways

This is a list of state highways in the U.S. state of California that have existed since the 1964 renumbering. It includes routes that were defined by the California State Legislature but never built, as well as routes that have been entirely relinquished to local governments. It does not include the few routes that were relinquished before 1964 or the larger number of sign routes that were renumbered in or before 1964.

Each state highway in California is maintained by the California Department of Transportation (Caltrans) and is assigned a Route (officially State Highway Route^[3][4]) number in the Streets and Highways Code (Sections 300-635). Under the code, the state assigns a unique Route X to each highway, and does not differentiate between state, US, or Interstate highways.