Welcome to L.A. Street Names, the origin stories of street names across Los Angeles County, from the shortest cul-de-sacs to the longest boulevards. Mysteries solved, myths debunked, scandals exposed, history revealed. This is an ongoing project with more than 1,900 streets – and growing. See FAQ for more information.
Featured Major Street
Sepulveda Boulevard
West L.A.’s original Military Avenue was rechristened Sepulveda Boulevard in 1925. Ten years later, this road was extended north over the Santa Monica Mountains – through the Sepulveda Pass, which itself was named by 1922 – to connect with and then absorb the former Saugus Avenue in the Valley. The Sepulveda name comes from a prominent Californio family. Patriarch Francisco Xavier Sepúlveda (c. 1742-1788) was a Mexican-born soldier in the Spanish army who came to Alta California in 1781. As was the custom, his job came with the perk of government-deeded land grants (native rights be damned) and his family would come to own much of present-day Santa Monica, San Pedro, Irvine, and Rancho Palos Verdes. Several Sepúlveda descendants also served as politicians in early Los Angeles. Once considered the longest surface street in L.A. County, Sepulveda Boulevard was shortened – if in name only – in 2018, when El Segundo made their two-mile stretch part of Pacific Coast Highway.