California Population By County in 2016

Based on the US Census Vintage data estimates, in 2016, the population of California was 39,149,186. Among all California counties, Los Angeles[object Promise] had the highest population (10,094,865), followed by San Diego[object Promise] (3,305,462), and Orange[object Promise] (3,164,277). Alpine[object Promise] was the least populated county (1,053).

Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

You can see similar information for other states and by state for the United States.