Jefferson County's estimated 2026 population is 796,278 with a growth rate of 0.13% in the past year according to the most recent United States census data. Jefferson County is the largest county in Kentucky. The 2010 population was 742,096 and has seen a growth of 7.3% since that time.
Data after 2023 is projected based on recent change
Overall: 38.4 years
Female: 39.7 years
Male: 37.2 years
There are 608,746 adults, (134,317 of whom are seniors) in Jefferson County.
Female: 402,067 (51.3%)
Male: 380,955 (48.7%)
The racial composition of Jefferson County includes 63.15% White, 20.76% Black or African American, 3.15% Asian, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 494,460 | 63.15% |
| Black or African American | 162,586 | 20.76% |
| Two or more races | 80,001 | 10.22% |
| Asian | 24,685 | 3.15% |
| Other race | 19,785 | 2.53% |
| Native American | 1,196 | 0.15% |
| Native Hawaiian or Pacific Islander | 309 | 0.04% |
Jefferson County's average per capita income is $49,243. Household income levels show a median of $69,866. The poverty rate stands at 14.29%.
Name | Median | Mean |
|---|---|---|
| Married Families | $114,881 | $147,165 |
| Families | $90,606 | $120,643 |
| Households | $69,866 | $97,866 |
| Non Families | $45,551 | $62,625 |
Average Income
Median Household Income
Poverty Rate