ZipCrawl

NOTE: Gray indicates insufficient data or a suppressed estimate.

Northern California's rural and coastal counties—particularly along the North Coast and Sierra Nevada foothills—skew notably older with median ages frequently exceeding 50, appearing in yellow and light green tones, while the Central Valley agricultural corridor and dense urban cores of Los Angeles, the Inland Empire, and parts of the Bay Area trend significantly younger, with pockets dipping below 30. The youngest zip codes, shown in deep purple, cluster around university towns and immigrant-heavy urban neighborhoods in Southern California, creating a stark contrast with the retirement-oriented communities along the northern coast. A broad gradient is visible moving from the younger, more diverse southern metro areas northward into the less populated, older-skewing mountain and rural regions of the state.

Data: U.S. Census Bureau, 2023 ACS