Data / Population / Putnam County

Population in Putnam County

Population in Putnam County was 34,380 in 2025, according to the U.S. Census Bureau. That is up 0.6% from 2024. That is the 70th highest of 88 counties in 2025.

2025, persons34,380
Change on 2024+0.6%
Rank70th of 88Counties in Ohio ranked
Series high34,3922020
Series low34,1602024

Population in Putnam County, 2020 to 2025

CSVChart (SVG)

34.2K34.2K34.3K34.3K34.4K34.4K2020202120222023202420252020: 34,392 persons2021: 34,343 persons2022: 34,277 persons2023: 34,240 persons2024: 34,160 persons2025: 34,380 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202534,380
202434,160
202334,240
202234,277
202134,343
202034,392

Compared with Ohio and United States

Place2025
Putnam County34,380
Ohio11,900,510
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 Putnam County?

Population in Putnam County was 34,380 in 2025, according to the U.S. Census Bureau. That is up 0.6% from 2024. That is the 70th highest of 88 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 Putnam County?

34,392 in 2020, the highest value since 2020 in this series.

More statistics for Putnam County

All statistics for Putnam County