Data / Population / Spencer County

Population in Spencer County

Population in Spencer County was 20,061 in 2025, according to the U.S. Census Bureau. That is down 0.5% from 2024. That is the 73rd highest of 92 counties in 2025.

2025, persons20,061
Change on 2024-0.5%
Rank73rd of 92Counties in Indiana ranked
Series high20,1572024
Series low19,8312020

Population in Spencer County, 2020 to 2025

CSVChart (SVG)

19.8K19.9K20K20.1K20.2K2020202120222023202420252020: 19,831 persons2021: 19,855 persons2022: 19,886 persons2023: 20,014 persons2024: 20,157 persons2025: 20,061 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202520,061
202420,157
202320,014
202219,886
202119,855
202019,831

Compared with Indiana and United States

Place2025
Spencer County20,061
Indiana6,973,333
United States341,784,857

Rankings

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Questions

What is the population in Spencer County?

Population in Spencer County was 20,061 in 2025, according to the U.S. Census Bureau. That is down 0.5% from 2024. That is the 73rd highest of 92 counties in 2025.

Where does this figure come from?

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved by Invokely on 2026-10-08.

What was the highest population in Spencer County?

20,157 in 2024, the highest value since 2020 in this series.

More statistics for Spencer County

All statistics for Spencer County