California
The Golden State is America's most populous, with tech hubs, Hollywood, and stunning coastline.
About California
GIS Map covers 110 cities and towns across California, home to roughly 22,111,667 residents combined. The Golden State is America's most populous, with tech hubs, Hollywood, and stunning coastline. The most populous community is Los Angeles, with about 3,857,263 residents in Los Angeles County, and it has an interactive street, satellite and topographic map. San Diego (1,389,526) and San Jose (990,138) follow. The state capital, Sacramento, sits in Sacramento County.
We publish boundary maps and Census demographics for 58 counties in California. Los Angeles County is the most populous, with about 9,808,667 residents. The highest median household income belongs to Santa Clara County at $164,281. Home values peak in San Mateo County, where the median owner-occupied home is worth about $1,559,600. By land area, San Bernardino County is the largest at roughly 20,068 square miles. The youngest population, with a median age of 31.8, is found in Merced County. Among mapped cities with at least 10,000 residents, Palo Alto reports the highest median household income at $231,101. All figures come from the U.S. Census Bureau's American Community Survey 2020-2024 five-year estimates.
The terrain in California changes noticeably from place to place. Hesperia is the highest at about 3,177 feet above sea level, while Indio is the lowest at about -12 feet. Every mapped city observes Pacific Time. According to the USDA U.S. General Soil Map, Mollisols are the dominant soil order beneath 24 of the mapped city centers. Federal records list 63 government-owned and 526 leased properties in these cities, the most in San Diego. City maps let you switch on FEMA flood zones, USGS contours and land cover layers.
We also map 529 ZIP code areas in California, each with its boundary and demographics. The most populated one has about 105,517 residents. The runner-up counts roughly 100,113 people. The densest packs about 54,344 people per square mile. Every page includes drawing and measuring tools plus a click-anywhere inspector that reports the county, ZIP, census tract, school district, flood zone and elevation of any point.
Cities in California
Explore interactive maps for 110 cities across California.