How many people live in Simpson County, KY?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 20,400 people living in Simpson County, KY. That makes Simpson County the 56th-most populous county in Kentucky. It is home to 0.44% of people living in the state.
20.4K
population of Simpson County, KY (2024)
0.44%
County share of the Kentucky population (2024)
About 20,400 people lived in Simpson County, KY in 2024.
Population estimates, 2000–2024
What are Simpson County, KY’s age demographics?
About 3,500 Simpson County residents are aged 65 and older in 2024. That represents 17.4% of its population. For comparison, the age group represents 18.1% of Kentucky’s population and 18% in the US overall.
Another 4,700 Simpson County residents, or 23.2% of the population, were children under 18. For comparison, the age group represents 22.4% of Kentucky’s population and 21.6% in the US overall.
A higher share of Simpson County, KY's population is aged under 18 than the US as a whole.
Population estimates by age group, (2024)
What are Simpson County, KY’s racial and ethnic demographics?
Non-Hispanic white residents make up 83.6% of the Simpson County, KY population, higher than the national share of 57.5%.
In contrast, Simpson County’s Hispanic population accounts for 4.1%, below the 20% nationwide, and the non-Hispanic Asian population makes up 0.85% of the county, compared with 6.5% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Simpson County, KY has a higher share of a non-Hispanic white population than Kentucky as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Simpson County, KY is Franklin with about 10,500 residents in 2024.
Cities and towns in Simpson County, KY ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Franklin | 10,524 |
| 2. | Balance of Simpson County | 9,826 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
