Total Population in Orange County, CA
ACS 2024 5-Year Estimates
3,165,820
Rank #6/3,222 · #3 in CA
100th
Orange 3,165,820
CA 39M -91.9%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Orange County's total population of 3,165,820 compares to all 3,222 U.S. counties. Values range from 33 to 9,808,667.
Distribution of Total Population Across All Counties
Ranking Context
Counties ranked closest to Orange County for total population.
Nearby Rankings
Full ranking →| #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 |
About Total Population
Orange County, California has a total population of 3,165,820, ranking #6 of 3,222 counties nationwide — 99.0% below the national value of 330M. Within California, it ranks #3 of 58. This places it in the 100th percentile nationally.
Total population count from the American Community Survey. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.