Spencer County, Kentucky Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 58th-largest in Kentucky
The population of Spencer County, Kentucky is 19,875 as of the 2023 American Community Survey, making it the 58th-largest county in Kentucky. The median household income is $98,333, the median home value is $297,600, and the median age is 43.3.
The population of Spencer County has grown 21.3% since 2010 (17,167 → 20,823), a +1.39% annualized rate.
19,875
Population
+1.39%
Annual growth
106
People / sq mi
$98,333
Median Income
$297,600
Median Home Value
Spencer County covers 187 sq mi of land at 106.5 people per square mile.
About Spencer County, KY
Spencer County is a county in Kentucky with a population of 19,875. It ranks #58 among counties in Kentucky by population. The median age is 43.3, older than the national median. The population is 50.4% male and 49.6% female.
The median household income in Spencer County is $98,333, above the US median of $74,580. 3.1% of residents live below the federal poverty level. Home values sit at a median of $297,600, with monthly rent averaging $954. The homeownership rate of 86.6% is higher than the national rate of 64.8%.
Educational attainment in Spencer County reflects 22.1% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 10.5% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 32.1 minutes each way.
Spencer County Population History (2010-2024)
The county of Spencer County had a population of 17,167 in 2010 and 20,823 in 2024, a 21.3% growth over 14 years. The peak was 20,823 in 2024. Average annual growth rate: 1.39%.
20,823
Population (2024)
17,167
Population (2010)
20,823
Peak (2024)
1.39%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 17,167 |
| 2011 | 17,434 |
| 2012 | 17,486 |
| 2013 | 17,645 |
| 2014 | 17,782 |
| 2015 | 18,043 |
| 2016 | 18,298 |
| 2017 | 18,583 |
| 2018 | 18,959 |
| 2019 | 19,302 |
| 2020 | 19,503 |
| 2021 | 19,879 |
| 2022 | 20,204 |
| 2023 | 20,557 |
| 2024 | 20,823 |
Race & Ethnicity
| White | 94.3% |
| Black or African American | 1.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.9% |
| Two or More Races | 0.0% |
Age & Sex
43.3
Median Age
49.6%
Female
50.4%
Male
15.0%
Age 65+
Age Distribution
Children (under 15): 18.5% · Seniors (65+): 15.0%
Income & Poverty
| Median household income | $98,333+$35,916 vs state |
| Mean household income | $110,220 |
| Per-capita income | $40,963 |
| Poverty rate | 3.1%-8.7% vs state |
| Unemployment rate | 3.8% |
| Employment-to-population | 60.3% |
Top Industries by Employment
The largest employment sector in Spencer County is professional & business services, accounting for 25.2% of workers.
How residents commute
0.1%
Drive alone
0.7%
Carpool
83.4%
Public transit
10.5%
Work from home
32.1 min
Avg commute
Housing
$297,600+$105,300 vs state
Median home value
$954
Median rent
86.6%
Homeownership rate
7,599
Total housing units
92.9%
Occupied
7.1%
Vacant
13.4%
Renter-occupied
Social & access
95.5%
With health insurance
95.7%
With broadband internet
23.0%
Foreign-born
7.2%
Veterans (18+)
15.3%
With a disability
98.4%
Speak language other than English at home
Education
93.3%
High School+
22.1%
Bachelor's+
Largest cities in Kentucky
Other counties in Kentucky
Part of Kentucky
Metro areas in Kentucky
County rankings
Frequently Asked Questions
Spencer County, Kentucky has a population of 19,875 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 58th-largest county in Kentucky. Population density is 106 people per square mile.
The population of Spencer County has grown 21.3% since 2010 (17,167 → 20,823), a +1.39% annualized rate.
The median household income in Spencer County, Kentucky is $98,333, with mean (average) household income of $110,220 and per-capita income of $40,963. 3.1% of residents live below the federal poverty level.
In Spencer County, the largest racial and ethnic groups are White (94.3%), Hispanic or Latino (1.9%), Black or African American (1.0%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Spencer County, Kentucky is 43.3 years. Residents are 49.6% female and 50.4% male.
The median home value in Spencer County is $297,600 and median monthly rent is $954. 86.6% of occupied housing units are owner-occupied. The county has 7,599 total housing units, 7.1% of which are vacant.
The largest employment sector in Spencer County, Kentucky is professional, scientific, and management services, employing 25.2% of workers. The unemployment rate is 3.8%.
Louisville/Jefferson County is among the largest cities associated with Spencer County, Kentucky, with a population of 627,210.
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Statewide data for Kentucky
Population, race, income, age, and trends across Kentucky
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.