Defiance County, Ohio

Defiance County: County in Ohio, United States


Defiance County is a county located in the U.S. state of Ohio. As of the 2010 census, the population was 39,037 and a population density of 36 people per km². After 10 years in 2020 county had an estimated population of 37,778 inhabitants. Its county seat is Defiance. The county was created 178 years ago in 1845.

Defiance County is located in northwest Ohio, bordering Indiana. It contains small towns, fertile farmland, and scenic rivers.

Geography and Climate

Defiance County covers about 414 square miles. The Maumee River and Auglaize River flow through the county. The terrain is flat with fertile soils. The climate brings warm summers and cold, snowy winters.


The population is around 38,000 residents as of 2021. The majority, around 95%, are white. Median household income is $51,000, slightly above Ohio's median.

Largest City and County Seat

The largest city is Defiance, with around 16,500 residents. Defiance serves as the county seat. Other towns include Hicksville, Sherwood, and Ney. Many commute to Defiance for work.

Economy and Industries

The economy revolves around manufacturing, agriculture, and healthcare. Top employers are Johns Manville and the Defiance Regional Medical Center. Many farms grow soybeans, corn, and livestock.

Attractions and Recreation

Popular attractions include the Auglaize River, the Cedar Creek State Nature Preserve, and historic downtown Defiance. Activities include boating, fishing, camping, and hiking. The county also has a vibrant arts scene.

Historical Significance

Defiance County has important history from the War of 1812 and Underground Railroad. The county is named for Fort Defiance, where settlers resisted British and Native American forces.

In summary, Defiance County offers small-town charm, scenic rivers, and unique historic sites to experience. Its rural farms and distinctive downtown Defiance make it worth a visit.

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

Quick Facts about Defiance County

Population : 37,778 (2020)
Country : United States of America
State : Ohio (United States)
Plate code : 20
Area : 1073 km2
Water as percent of area : 0.7%
Land as percent of area : 99.3%
Named for : Fort Defiance
Altitude : 709 feet / 216 meters
Capital : Defiance
Establishment : April 04, 1845
Time Zone : America/New_York
Local time : 10:58:36 (24th September 2023)
Density : 35 Pop. per km² as of 2020
Population growth : -3.33% (2010-2020)
Weather : 78℉ Sunny 7-days weather
Defiance County Courthouse  southern side and front image
Defiance County Courthouse southern side and front
Defiance County Courthouse  southern side and front image


Defiance County is located at 41°19'26"N 84°29'26"W (41.3239200, -84.4905000). It has 5 neighbors: Paulding County, Allen County, DeKalb County, Henry County and Putnam County.

Defiance County map

The largest city of Defiance County is Defiance with a population of 16,482. Other cities include, Farmer population 901 and Ney population 337. See all Defiance County cities & populated places.

Defiance County Populated Places

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

City Name Population Title
Defiance 16,482 City in and the county seat of Defiance County, Ohio, United States
Hicksville 3,405 Township in Defiance County, Ohio
Farmer 901 Unincorporated community in Defiance County, Ohio
Ney 337 Human settlement in Defiance County, Ohio, United States of America


Defiance County forecast: Sunny, with a high near 78. Northeast wind 5 to 10 mph. more

Defiance County has 5 neighbours.

  • Defiance


According to census records, the population of Defiance County decreased by 3.33% in 10 years.

Year Population % Change Method
2010 39,037 - census
2011 39,005 -0.08% estimation process
2012 38,827 -0.46% estimation process
2013 38,564 -0.68% estimation process
2014 38,525 -0.1% estimation process
2015 38,326 -0.52% estimation process
2016 38,140 -0.49% estimation process
2017 38,156 0.04% estimation process
2018 38,089 -0.18% estimation process
2019 38,087 -0.01% estimation process
2020 37,778 -0.82% estimation process

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