Data / Population density / Jefferson County

Population density in Jefferson County

Population density in Jefferson County was 34 inhabitants per km² in 2025, according to the U.S. Census Bureau. That is down 1.1% from 2024. That is the 41st highest of 62 counties in 2025.

2025, inhabitants per km²34
Change on 2024-1.1%
Rank41st of 62Counties in New York ranked
Series high35.62021
Series low342025

Population density in Jefferson County, 2020 to 2025

CSVChart (SVG)

33.53434.53535.5362020202120222023202420252020: 35.3 inhabitants per km²2021: 35.6 inhabitants per km²2022: 35.2 inhabitants per km²2023: 34.5 inhabitants per km²2024: 34.3 inhabitants per km²2025: 34 inhabitants per km²
inhabitants per km². Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09, published 2026-03-26.
All 6 values
Periodinhabitants per km²
202534
202434.3
202334.5
202235.2
202135.6
202035.3

Compared with New York and United States

Place2025
Jefferson County34
New York163.9
United States37.3

Rankings

Definition

Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.

United States: Census Bureau population estimates for 1 July divided by land area (water excluded) from the latest Census Gazetteer files. US tables often give people per square mile; multiply persons per km² by 2.59 to compare.

How to cite

U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.

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Questions

What is the population density in Jefferson County?

Population density in Jefferson County was 34 inhabitants per km² in 2025, according to the U.S. Census Bureau. That is down 1.1% from 2024. That is the 41st highest of 62 counties in 2025.

Where does this figure come from?

U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². Retrieved by Invokely on 2026-10-09.

What was the highest population density in Jefferson County?

35.6 inhabitants per km² in 2021, the highest value since 2020 in this series.

More statistics for Jefferson County

All statistics for Jefferson County