Total Population in Orange County, CA
ACS 2024 5-Year Estimates
How Orange County Compares
National Distribution
Where Orange County falls among all 3,222 U.S. counties for total population.
■ Orange County: 3,165,820
Ranking Context
| Rank | County | Value |
|---|---|---|
| #3 | Harris County, TX | 4,838,303 |
| #4 | Maricopa County, AZ | 4,559,748 |
| #5 | San Diego County, CA | 3,288,774 |
| #6 | Orange County, CA | 3,165,820 |
| #7 | Miami-Dade County, FL | 2,738,356 |
| #8 | Kings County, NY | 2,631,580 |
| #9 | Dallas County, TX | 2,621,179 |
Total Population in Orange County, California
Orange County, California has a total population of 3,165,820, which ranks #6 of 3,222 out of 3,222 counties nationwide. This is 99.0% below the national value of 330M.
Within California, Orange County ranks #3 of 58 out of 58 counties. This places it in the 100th percentile nationally.
Total population count from the American Community Survey. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.
About this data
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.