Data / Population / Massac County

Population in Massac County

Population in Massac County was 13,502 in 2025, according to the U.S. Census Bureau. That is down 0.8% from 2024. That is the 76th highest of 102 counties in 2025.

2025, persons13,502
Change on 2024-0.8%
Rank76th of 102Counties in Illinois ranked
Series high14,1412020
Series low13,5022025

Population in Massac County, 2020 to 2025

CSVChart (SVG)

13.4K13.6K13.8K14K14.2K2020202120222023202420252020: 14,141 persons2021: 13,959 persons2022: 13,863 persons2023: 13,741 persons2024: 13,616 persons2025: 13,502 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202513,502
202413,616
202313,741
202213,863
202113,959
202014,141

Compared with Illinois and United States

Place2025
Massac County13,502
Illinois12,719,141
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 Massac County?

Population in Massac County was 13,502 in 2025, according to the U.S. Census Bureau. That is down 0.8% from 2024. That is the 76th highest of 102 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 Massac County?

14,141 in 2020, the highest value since 2020 in this series.

More statistics for Massac County

All statistics for Massac County