Data / Population / Sullivan County

Population in Sullivan County

Population in Sullivan County was 5,738 in 2025, according to the U.S. Census Bureau. That is down 0.4% from 2024. That is the 106th highest of 115 counties in 2025.

2025, persons5,738
Change on 2024-0.4%
Rank106th of 115Counties in Missouri ranked
Series high5,9852020
Series low5,7382025

Population in Sullivan County, 2020 to 2025

CSVChart (SVG)

5,7005,7505,8005,8505,9005,9506,0002020202120222023202420252020: 5,985 persons2021: 5,903 persons2022: 5,839 persons2023: 5,856 persons2024: 5,762 persons2025: 5,738 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
20255,738
20245,762
20235,856
20225,839
20215,903
20205,985

Compared with Missouri and United States

Place2025
Sullivan County5,738
Missouri6,270,541
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 Sullivan County?

Population in Sullivan County was 5,738 in 2025, according to the U.S. Census Bureau. That is down 0.4% from 2024. That is the 106th highest of 115 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 Sullivan County?

5,985 in 2020, the highest value since 2020 in this series.

More statistics for Sullivan County

All statistics for Sullivan County