Get ready-to-use data, reports, analysis, and visualizations covering the demographics of Jefferson County, Kentucky based on the current United States Census Bureau's 2023 American Community Survey (ACS) 5-Year Estimates.
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Jefferson County, Kentucky Demographics: Sex by Age
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the total population of Jefferson County, Kentucky is 777,392. The median age of the population in Jefferson County, Kentucky is 38.4. The median age for males is 37.1 years, and for females, it is 39.8 years.
The age distribution of the population in Jefferson County, Kentucky is as follows:
- Under 5 years: 6.12%
- 5–17 years (children): 16.15%
- 18–24 years (young adults): 8.35%
- 25–34 years: 14.63%
- 35–54 years: 24.89%
- 55–64 years: 12.98%
- 65 years and over (seniors): 16.88%
The total dependency ratio in Jefferson County, Kentucky is 64.33%. The youth dependency ratio is 36.59%, and the old-age dependency ratio is 27.74%. In demographic terms, the dependency ratio measures the size of the population typically not in the labor force (children and older adults) relative to those of working age.
Jefferson County, Kentucky Demographics: Population by Race & Ethnicity
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the breakdown of the population in Jefferson County, Kentucky by race and ethnicity (racial demographics) is as follows:
- White: 63.34%
- Black/African American: 21.67%
- American Indian and Alaska Native: 0.04%
- Asian: 2.89%
- Native Hawaiian or Other Pacific Islander: 0.04%
- Some other race: 0.35%
- Two or more races: 3.84%
- Hispanic or Latino: 7.83%
The diversity index score in Jefferson County, Kentucky is 54.34%, suggesting a moderate level of diversity.
Jefferson County, Kentucky Demographics: Household Income
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the median household income in Jefferson County, Kentucky over the past 12 months, adjusted for 2023 inflation, was $67,849.
The distribution of household income by income bracket in Jefferson County, Kentucky is as follows:
- Less than $20,000: 13.31%
- $20,000–$34,999: 11.63%
- $35,000–$49,999: 12.39%
- $50,000–$74,999: 17.10%
- $75,000–$149,999: 29.19%
- $150,000 or more: 16.37%
Jefferson County, Kentucky Demographics: Educational Attainment
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the breakdown of the total population of Jefferson County, Kentucky, age 25 and older, by educational level is as follows:
- Less than high school graduate: 8.48%
- High school graduate (incl. equivalency): 25.94%
- Some college or associate's degree: 29.00%
- Bachelor's Degree: 21.54%
- Graduate or professional degree: 15.04%
In Jefferson County, Kentucky, 36.58% of the population has a bachelor's degree or higher, while 91.52% are high school graduates or higher.
Jefferson County, Kentucky Demographics: Health Insurance Coverage Status by Sex by Age
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the uninsured rate in Jefferson County, Kentucky is 5.57%.
Rates of people in Jefferson County, Kentucky lacking health insurance coverage, by age group and sex are as follows:
- Under 18: 3.55% of males and 3.05% of females are uninsured
- Ages 18–34: 6.27% of males and 4.81% of females are uninsured
- Ages 35–64: 10.58% of males and 6.70% of females are uninsured
- Ages 65 and older: 0.11% of males and 2.03% of females are uninsured
Jefferson County, Kentucky Demographics: Nativity and Citizenship Status in the United States
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 94.69% of people living in Jefferson County, Kentucky are U.S. citizens. This includes individuals born in the United States, Puerto Rico, or U.S. Island Areas, those born abroad to American parents, and those who became citizens through naturalization. 4.17% of the population obtained U.S. citizenship through the naturalization process. In Jefferson County, Kentucky, 4.17% of the population are naturalized immigrants, who obtained U.S. citizenship through the immigration and naturalization process.
Jefferson County, Kentucky Demographics: Means of Transportation to Work
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the means of transportation to work for the population of Jefferson County, Kentucky are distributed as follows:
- Car, truck, or van: 82.06%
- Public transportation (excluding taxicab): 1.89%
- Bicycle: 0.24%
- Walked: 1.86%
- Taxicab, motorcycle, or other means: 1.52%
- Worked from home: 12.42%
Frequently Asked Questions
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the age breakdown of the population of Jefferson County, Kentucky is as follows:
- Under 5: 6.12%
- Ages 5–17: 16.15%
- Ages 18–24: 8.35%
- Ages 25–34: 14.63%
- Ages 35–54: 24.89%
- Ages 55–64: 12.98%
- 65 or older: 16.88%
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the racial demographics of the population of Jefferson County, Kentucky are as follows:
- White: 63.34%
- Black/African American: 21.67%
- American Indian and Alaska Native: 0.04%
- Asian: 2.89%
- Native Hawaiian or Other Pacific Islander: 0.04%
- Some other race: 0.35%
- Two or more races: 3.84%
- Hispanic or Latino: 7.83%
* Hispanic includes respondents of any race. Other categories are non-Hispanic.
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the distribution of household income in Jefferson County, Kentucky by income bracket is as follows:
- Less than $20,000: 13.31%
- $20,000–$34,999: 11.63%
- $35,000–$49,999: 12.39%
- $50,000–$74,999: 17.10%
- $75,000–$149,999: 29.19%
- $150,000 or more: 16.37%
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the median household income in Jefferson County, Kentucky in the past 12 months, in 2023 inflation-adjusted dollars, was $67,849.
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 63.34% of the population in Jefferson County, Kentucky identifies as White alone (not Hispanic or Latino).
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 21.67% of the population in Jefferson County, Kentucky identifies as Black or African American alone (not Hispanic or Latino).
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 5.57% of the population of Jefferson County, Kentucky lacks health insurance coverage.
The detailed breakdown by age and sex is as follows:
- Under 18: 3.55% of males and 3.05% of females
- Ages 18–34: 6.27% of males and 4.81% of females
- Ages 35–64: 10.58% of males and 6.70% of females
- Ages 65 and over: 0.11% of males and 2.03% of females