Gallia County, Ohio

Gallia County: County in Ohio, United States


Gallia County is a county located in the U.S. state of Ohio. As of the 2010 census, the population was 30,934 and a population density of 25 people per km². After 10 years in 2020 county had an estimated population of 29,802 inhabitants. Its county seat is Gallipolis. The county was created 219 years ago in 1803.

Quick Facts about Gallia County

Population : 29,802 (2020)
Country : United States of America
State : Ohio (United States)
Plate code : 27
Area : 1220 km2
Water as percent of area : 1%
Land as percent of area : 99%
Named for : Gaul
Altitude : 650 feet / 198 meters
Capital : Gallipolis
Establishment : March 03, 1803
Time Zone : America/New_York
Local time : 00:01:12 (4th December 2022)
Density : 24 Pop. per km² as of 2020
Population growth : -3.8% (2010-2020)
Gallia County locator map
Location of Gallia County on Ohio map.
Gallia County Courthouse  1985 edition image
Gallia County Courthouse 1985 edition
Gallia County Courthouse  1985 edition image


Gallia County is located at 38°49'29"N 82°19'1"W (38.8246700, -82.3169100). It has 6 neighbors: Jackson County, Lawrence County, Meigs County, Vinton County, Cabell County and Mason County.

Gallia County map

The largest city of Gallia County is Spring Valley with a population of 500. Other cities include, Crown City population 399 and Adamsville population 124. See all Gallia County cities & populated places.

Gallia County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Gallia County.

City Name Population Title
Porter 9,135 Township of Ohio
Swan Creek 8,398 Township in Fulton County, Ohio
Gallipolis 3,545 Town in Ohio
Addison 2,124 Township in Gallia County, Ohio
Rio Grande 777 Village in Gallia County, Ohio, United States
Vinton 528 Village in Ohio
Spring Valley 500 Human settlement in Greene County, Ohio, United States of America
Crown City 399 Human settlement in Gallia County, Ohio, United States of America
Cheshire 127 Village in Gallia County, Ohio
Adamsville 124 Human settlement in Ohio, United States of America

Gallia County has 6 neighbours.

  • Gallipolis


According to census records, the population of Gallia County decreased by 3.8% in 10 years.

Year Population % Change Method
2010 30,934 - census
2011 31,031 0.31% estimation process
2012 30,886 -0.47% estimation process
2013 30,685 -0.66% estimation process
2014 30,463 -0.73% estimation process
2015 30,249 -0.71% estimation process
2016 30,186 -0.21% estimation process
2017 30,162 -0.08% estimation process
2018 29,945 -0.72% estimation process
2019 29,898 -0.16% estimation process
2020 29,802 -0.32% estimation process

Comitatul Gallia, Comte de Gallia, Comté de Gallia, Condado de Gallia, Condado han Gallia, Condau de Gallia, Condáu de Gallia, Contea di Gallia, Galija, Gallia, Gallia Comitatus, Gallia Kun, Gallia Kūn, Gallia konderria, Gallia megye, Gallian piirikunta, Gallija, Hrabstwo Gallia, Okrug Galija, Quan Gallia, Quận Gallia, galliya ka'unti, gao lu xian, garia jun, mqatʿt ghalya, shhrstan galya awhayw, Галия, Галлия, Галлія, Округ Галија, شهرستان گالیا، اوهایو, مقاطعة غاليا, گالیا کاؤنٹی، اوہائیو, گالیو کاؤنٹی, গাল্লিয়া কাউন্টি, ガリア郡, 高盧縣

People born in Gallia County (4)

People born in Gallia County, including Recipient of the Medal of Honor James M. Cumpston, politician John C. Hutsinpiller, Ohio Jurist Joseph Perry Bradbury, .


  • Merlin O'Neill (Commandant of the United States Coast Guard, 1949–1954) he was born in 30/10/1898

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 Capital city of Ohio, United States
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 City in Ohio, United States
Stark County 369,772 County in Ohio, United States
Lorain County 312,172 County in Ohio, United States
Cincinnati 304,548 City in Ohio, United States; county seat of Hamilton County
Toledo 271,455 County seat of Lucas County, Ohio, United States
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