Data / Population / Clark County

Population in Clark County

Population in Clark County was 4,031 in 2025, according to the U.S. Census Bureau. That is up 0.8% from 2024. That is the 40th highest of 66 counties in 2025.

2025, persons4,031
Change on 2024+0.8%
Rank40th of 66Counties in South Dakota ranked
Series high4,0312025
Series low3,8502020

Population in Clark County, 2020 to 2025

CSVChart (SVG)

3,8503,9003,9504,0004,0502020202120222023202420252020: 3,850 persons2021: 3,874 persons2022: 3,948 persons2023: 3,951 persons2024: 4,000 persons2025: 4,031 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
20254,031
20244,000
20233,951
20223,948
20213,874
20203,850

Compared with South Dakota and United States

Place2025
Clark County4,031
South Dakota935,094
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 Clark County?

Population in Clark County was 4,031 in 2025, according to the U.S. Census Bureau. That is up 0.8% from 2024. That is the 40th highest of 66 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 Clark County?

4,031 in 2025, the highest value since 2020 in this series.

More statistics for Clark County

All statistics for Clark County