California Counties Map Quiz

How to Play the quiz

1. 1Before you start, tap any county to see its name, or press "Show names" to label them all.
2. 2Pick a round: Biggest counties asks the 15 most populous first, All counties asks any of the 58, and Cities names one of 53 cities and you click its county. Whole map asks all 58.
3. 3Counties are small on a phone: zoom in, or use the magnifier that opens when you tap a crowded spot.
4. 4After each answer the right county lights up, so a mistake still teaches you where it is.

California's 58 counties

California has 58 counties. San Bernardino County is the largest county in the contiguous United States, bigger than nine states, and runs from the edge of Los Angeles across the Mojave to the Colorado River. San Francisco is the smallest, a city and county in one. The newest county, Imperial, was formed in 1907.

Where Californians live

Los Angeles County has about 10 million people, the most of any county in the United States and more than most states. With San Diego, Orange, Riverside and San Bernardino counties, Southern California holds more than half the state. Alpine County, in the Sierra Nevada, had 1,204 people in 2020.

The 58 Counties of California

In alphabetical order, with the population at the 2020 census.

Frequently Asked Questions