• county
  • FIPS 39137
  • Largest town: Ottawa

Putnam County, Ohio

Putnam County had 34,206 residents in the Census Vintage 2024 estimate, on 482.5 square miles of land. It ranks 70th of 88 in Ohio by population and 31st by land area.

Population
34,206
#70 of 88 in Ohio · #1,329 in US
Area
482.5 sq mi
#31 of 88 in Ohio · #2,149 in US
Density
71 / sq mi
#70 of 88 in Ohio · #1,170 in US
Median household income
$79,412
#13 of 88 in Ohio · #496 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Putnam County within Ohio. Pin: Columbus.

Measure from here

Tools and pages that start from Putnam County

Putnam County population, land area and income

Putnam County had 34,206 residents in the Census Vintage 2024 estimate, on 482.5 square miles of land. It ranks 70th of 88 in Ohio by population and 31st by land area. That works out to 70.9 people per square mile, below the US average of 96.3, and above the national county median.

The median county-equivalent in Ohio has 58,250 residents; Putnam County is somewhat smaller.

Its SAIPE 2023 median household income of $79,412 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

34,206

3144th1st

1329th of 3,144 (US)

Land area

483 sq mi

3144th1st

2149th of 3,144 (US)

Density

70.9 / sq mi

3144th1st

1170th of 3,144 (US)

Median household income

$79,412

3143rd1st

496th of 3,143 (US)

Rank within Ohio (88)

Population

34,206

88th1st

70th of 88 (OH)

Land area

483 sq mi

88th1st

31st of 88 (OH)

Density

70.9 / sq mi

88th1st

70th of 88 (OH)

Median household income

$79,412

88th1st

13th of 88 (OH)

How Putnam County's population changed since 2020

Putnam County lost 201 residents between the July 2020 and July 2024 estimates, a drop of 0.6%. That ranks 53rd of 88 in Ohio for growth. The median Ohio county changed by -0.2%, and the state as a whole by +0.7%.

Since the April 2020 estimates base, Putnam County recorded 1,768 births and 1,606 deaths, a natural change of +162. Net international migration added +162 and net domestic migration, people moving to or from other US counties, came to -574. The largest single component was domestic migration, which removed 574 people.

34.4k202034.4k202134.3k202234.3k202334.2k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
1,768
Deaths
1,606
Net international migration
+162
Net domestic migration
-574
Change, July 2023 to July 2024
-48

Where Putnam County is

The Census internal point of Putnam County is at 41.024500, -84.129900. It sits in UTM zone 16N. The map shades Ohio's 88 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Putnam County outlined. Dots are towns of 1,000+ people with residents in it.

Shelby County: -0.4%Defiance County: +1.0%Darke County: -0.8%Seneca County: -0.6%Wood County: +0.6%Fayette County: -0.7%Clark County: -0.7%Hocking County: -2.2%Jackson County: +0.2%Miami County: +2.7%Richland County: -0.1%Union County: +13.7%Auglaize County: -1.2%Hancock County: +0.1%Morgan County: -1.6%Van Wert County: -0.1%Hardin County: -1.0%Paulding County: -0.3%Portage County: +1.2%Delaware County: +10.6%Harrison County: -3.1%Ross County: -1.3%Crawford County: -0.9%Clinton County: -0.0%Henry County: -0.5%Pike County: -0.0%Cuyahoga County: -1.7%Highland County: +1.0%Knox County: +1.7%Ottawa County: -1.5%Huron County: -0.6%Erie County: -2.2%Holmes County: +1.0%Lawrence County: -4.0%Marion County: -0.6%Fairfield County: +5.2%Putnam County: -0.6%Guernsey County: -0.5%Vinton County: -2.1%Gallia County: -1.2%Trumbull County: -0.7%Wayne County: -0.2%Perry County: +0.6%Ashland County: -0.1%Fulton County: -1.4%Brown County: +1.4%Lucas County: -1.1%Stark County: -0.1%Medina County: +1.1%Belmont County: -2.4%Williams County: -1.4%Mahoning County: -1.0%Noble County: +1.1%Greene County: +2.5%Preble County: -0.5%Allen County: -1.2%Athens County: +1.3%Jefferson County: -2.0%Adams County: +0.8%Monroe County: -2.3%Washington County: -2.2%Logan County: -0.1%Franklin County: +2.4%Warren County: +5.3%Wyandot County: -2.1%Licking County: +3.4%Hamilton County: +0.8%Clermont County: +2.6%Butler County: +2.2%Coshocton County: +1.1%Geauga County: -0.0%Sandusky County: -0.0%Ashtabula County: -0.6%Carroll County: -0.9%Tuscarawas County: -1.2%Morrow County: +2.7%Montgomery County: +0.1%Mercer County: +0.3%Lake County: -0.1%Pickaway County: +6.0%Madison County: +3.8%Muskingum County: +0.1%Meigs County: -3.0%Columbiana County: -1.8%Lorain County: +2.7%Scioto County: -2.8%Champaign County: +0.4%Summit County: -0.3%
Change 2020 to 2024
  1. < -1.4%
  2. < -0.6%
  3. < -0.0%
  4. < +1.1%
  5. ≥ +1.1%
no data

Orange pin: Putnam County internal point. Dark pin: Columbus.

Internal point

Decimal
41.024500, -84.129900
DMS
41°01'28.20"N 84°07'47.64"W
UTM
16N 741304.5E 4545445.6N
Geohash
dpk1ms63p
Plus code
86HQ2VFC+Q2

Towns in Putnam County

6 incorporated places of 1,000+ people have residents in Putnam County, 12,427 people together, or 36% of the county. Each figure counts only the part of the town inside Putnam County; towns marked "part" extend into another county. The largest is Ottawa with 4,422.

  1. 01Ottawa4,422
  2. 02Leipsic2,159
  3. 03Columbus Grove2,124
  4. 04Kalida1,451
  5. 05Pandora1,186
  6. 06Continental1,085
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Putnam County

The Census 2024 county adjacency file lists 7 neighbors for Putnam County. The most populous is Wood County, OH, with 133,077 residents. Distances run between Census internal points in a straight line.

Distance to Columbus and the nearest big city

Columbus is 94.4 miles SE of Putnam County's internal point in a straight line. The nearest place of 100,000 or more is Toledo, OH (population 265,638), 52.6 miles away. The nearest place of 10,000 or more is Lima, OH (population 34,690), 19.6 miles away.

Putnam County FIPS code

The FIPS code of Putnam County is 39137: state code 39 for Ohio plus county code 137. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $79,412.

Questions people ask

What is the population of Putnam County, Ohio?

The Census Vintage 2024 estimate for July 1, 2024 is 34,206. That is down 201 people (0.6%) from the July 2020 estimate of 34,407.

What is the FIPS code of Putnam County?

39137. The first two digits (39) are Ohio; the last three (137) identify the county.

What is the largest town in Putnam County?

Ottawa, with 4,422 residents inside Putnam County in 2024.

Which counties border Putnam County?

7 county-equivalents border it in the Census 2024 adjacency file: Wood County, OH; Allen County, OH; Hancock County, OH; Defiance County, OH; Van Wert County, OH; Henry County, OH; Paulding County, OH.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.