Putnam County, Ohio

Putnam County: county in Ohio, United States

About

Putnam County is a county located in the U.S. state of Ohio. As of the 2010 census, the population was 34,499 and a population density of 28 people per km². After 10 years in 2020 county had an estimated population of 33,654 inhabitants. Its county seat is Ottawa. The county was created 206 years ago in 1820.

Putnam County locator map
Location of Putnam County on Ohio map.

County Snapshot

Putnam County at a glance

Putnam County currently has 16 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

16

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

Quick Facts about Putnam County

Population 33,654 (2020)
Country United States of America
State Ohio (United States)
Different from Putnam County, Putnam County, Putnam County, Putnam County, Putnam County, Putnam County, Putnam County, Putnam County
Plate code 69
Area 1254 km2
Water as percent of area 0.4%
Land as percent of area 99.6%
Latitude & Longitude 41.0221,-84.1317
Named for Israel Putnam
Capital Ottawa
Establishment February 12, 1820
Time Zone America/New_York
Local time 00:59:55 (19th April 2026)
Density 27 Pop. per km² as of 2020
Population growth -2.51% (2010-2020)
Putnam County Courthouse - panoramio '1' image
Putnam County Courthouse - panoramio '1' image

Geography

Putnam County is located at 41°1'19"N 84°7'54"W (41.0220800, -84.1317300). It has 5 neighbors: Paulding County, Allen County, Defiance County, Henry County and Van Wert County.

Putnam County map

Click "full screen" full screen map icon to open full mode. View satellite images

The largest city of Putnam County is Ottawa with a population of 4,323. Other cities include, Columbus Grove population 2,061, Leipsic population 2,016, Kalida population 1,583 and Rice population 1,300. See all Putnam County cities & populated places.

Putnam County Populated Places (more)

Cities, towns, neighborhoods & other populated places in Putnam County.

City Name Population Title
Ottawa 4,323 Village in Ohio
Columbus Grove 2,061 Village in Putnam County, Ohio, United States
Leipsic 2,016 Town in Delaware
Kalida 1,583 City in Putnam County, Ohio, United States of America
Rice 1,300 Human settlement in United States of America
Pandora 1,101 Village in Ohio
Continental 1,085 Airline in the United States
Glandorf 1,030 Town
Ottoville 960 Human settlement in Putnam County, Ohio, United States of America
Fort Jennings 495 Village in the United States
Dupont 301 Town in Ohio
West Leipsic 188 Village in the United States
Gilboa 173 Human settlement in Putnam County, Ohio, United States of America
Cloverdale 159 Township in Putnam County, Indiana
Belmore 143 Human settlement in Putnam County, Ohio, United States of America
Miller City 138 Human settlement in Putnam County, Ohio, United States of America

Official website of Putnam County

Official Website

Demographics

According to census records, the population of Putnam County decreased by 2.51% in 10 years.

Year Population % Change Method
2010 34,499 - census
2011 34,385 -0.33% estimation process
2012 34,207 -0.52% estimation process
2013 34,123 -0.25% estimation process
2014 34,198 0.22% estimation process
2015 34,026 -0.51% estimation process
2016 34,007 -0.06% estimation process
2017 33,860 -0.43% estimation process
2018 33,802 -0.17% estimation process
2019 33,861 0.17% estimation process
2020 33,654 -0.62% estimation process
Comitatul Putnam, Comte de Putnam, Comté de Putnam, Condado de Putnam, Condado han Putnam, Contea di Putnam, Hrabstwo Putnam, Okrug Patnam, Patnam, Patnem, Putnam, Putnam Comitatus, Putnam Kun, Putnam Kūn, Putnam konderria, Putnam megye, Putnamin piirikunta, Quan Putnam, Quận Putnam, mqatʿt btnam, pattonamu jun, pu te nan xian, putanama ka'unti, shhrstan patnm awhayw, Округ Патнам, Патнам, Патнем, Путнам, شهرستان پاتنم، اوهایو, مقاطعة بتنام, پتنام کاؤنٹی، اوہائیو, پٹنم کاؤنٹی، اوہائیو, পুতনাম কাউন্টি, パットナム郡, 普特南縣

People born in Putnam County (4)

People born in Putnam County, including politician Cyrus Locher, politician George Washington Smith, Frank Herman Albright, .

More notable people

  • Myrtle Dorsey she was born in 22/11/1885

Other places with the same name (8)

Ohio Other Counties (more counties)

County Name Population Title
Franklin County 1,324,624 County in Massachusetts, United States
Cuyahoga County 1,227,883 County in Ohio, United States
Columbus 884,356 The fifteenth most populous city in the United States and the center of the Columbus metropolitan area.
Hamilton County 817,985 County in New York, United States
Summit County 538,866 County in northern Utah, United States
Montgomery County 531,610 County in Ohio, United States
Lucas County 428,294 County in Ohio, United States
Butler County 385,648 County in Ohio, United States of America
Cleveland 378,589 The second most populous city in Ohio and the center of the Cleveland metropolitan area.
Stark County 369,772 County in Ohio, United States
Lorain County 312,172 County in Ohio, United States
Cincinnati 304,548 The third most populous city in Ohio and the center of the Cincinnati metropolitan area.
Toledo 271,455 The fourth most populous city in Ohio and the center of the Toledo metropolitan area.
Warren County 238,412 County in New York, United States
Lake County 229,569 County in Ohio, United States
Mahoning County 226,075 County in Ohio, United States