Total Population in Jefferson County, KY
ACS 2024 5-Year Estimates
How Jefferson County Compares
National Distribution
Where Jefferson County falls among all 3,222 U.S. counties for total population.
■ Jefferson County: 783,022
Ranking Context
| Rank | County | Value |
|---|---|---|
| #81 | San Joaquin County, CA | 797,334 |
| #82 | Polk County, FL | 790,694 |
| #83 | Suffolk County, MA | 785,121 |
| #84 | Jefferson County, KY | 783,022 |
| #85 | Cobb County, GA | 775,208 |
| #86 | DeKalb County, GA | 765,351 |
| #87 | Monroe County, NY | 753,753 |
Total Population in Jefferson County, Kentucky
Jefferson County, Kentucky has a total population of 783,022, which ranks #84 of 3,222 out of 3,222 counties nationwide. This is 99.8% below the national value of 330M.
Within Kentucky, Jefferson County ranks #1 of 120 out of 120 counties. This places it in the 97th 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.