Data / Population / Lewis County

Population in Lewis County

Population in Lewis County was 26,479 in 2025, according to the U.S. Census Bureau. That is down 0.1% from 2024. That is the 59th highest of 62 counties in 2025.

2025, persons26,479
Change on 2024-0.1%
Rank59th of 62Counties in New York ranked
Series high26,7392021
Series low26,4792025

Population in Lewis County, 2020 to 2025

CSVChart (SVG)

26.4K26.5K26.6K26.7K26.8K2020202120222023202420252020: 26,571 persons2021: 26,739 persons2022: 26,616 persons2023: 26,568 persons2024: 26,512 persons2025: 26,479 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202526,479
202426,512
202326,568
202226,616
202126,739
202026,571

Compared with New York and United States

Place2025
Lewis County26,479
New York20,002,427
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 Lewis County?

Population in Lewis County was 26,479 in 2025, according to the U.S. Census Bureau. That is down 0.1% from 2024. That is the 59th highest of 62 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 Lewis County?

26,739 in 2021, the highest value since 2020 in this series.

More statistics for Lewis County

All statistics for Lewis County