| Name | Jefferson County |
| State | Kentucky |
| FIPS Code | 21111 |
| County Seat | Louisville |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 741,285 |
| Population Growth Rate(2000-2022) | 5.65% |
| Majority Ethnicity | White 72.84% |
| Public School Majority Ethnicity | White 38% |
| Partisan Voting Index | Democratic:+8 |
| Unemployment Rate (January 2025) | 4.5% |
| Area Code(s) | 502 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 72.84% |
| African American | 23.74% |
| Hispanic | 0.1% |
| Asian | 3.22% |
| Native American | 0.05% |
| Hawaiin/Pacific Islander | 0.05% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 37.64% |
| African American | 36.49% |
| Hispanic | 14.81% |
| Asian | 4.83% |
| Native American | 0.13% |
| Hawaiin/Pacific Islander | 0.14% |