Total Population in Jefferson County, KY
ACS 2024 5-Year Estimates
783,022
Rank #84/3,222 · #1 in KY
97th
Jefferson 783,022
KY 4,534,824 -82.7%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Jefferson County's total population of 783,022 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 Jefferson County for total population.
Nearby Rankings
Full ranking →| #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 |
About Total Population
Jefferson County, Kentucky has a total population of 783,022, ranking #84 of 3,222 counties nationwide — 99.8% below the national value of 330M. Within Kentucky, it ranks #1 of 120. This places it in the 97th 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.