Trumbull County, Ohio

Trumbull County: County in Ohio, United States


Trumbull County is a county located in the U.S. state of Ohio. As of the 2010 census, the population was 210,312 and a population density of 128 people per km². After 10 years in 2020 county had an estimated population of 196,800 inhabitants. Its county seat is Warren. The county was created 223 years ago in 1800.

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

Quick Facts about Trumbull County

Population : 196,800 (2020)
Country : United States of America
State : Ohio (United States)
Plate code : 78
Area : 1644 km2
Water as percent of area : 2.9%
Land as percent of area : 97.1%
Named for : Jonathan Trumbull
Altitude : 906 feet / 276 meters
Capital : Warren
Establishment : July 07, 1800
Time Zone : America/New_York
Local time : 10:53:34 (2nd March 2024)
Density : 120 Pop. per km² as of 2020
Population growth : -6.87% (2010-2020)
Trumbull County Courthouse image
Trumbull County Courthouse
Trumbull County Courthouse image


Trumbull County is located at 41°19'2"N 80°45'40"W (41.3171700, -80.7611600). It has 4 neighbors: Ashtabula County, Geauga County, Mahoning County and Mercer County.

Trumbull County map

The largest city of Trumbull County is Niles with a population of 18,050. Other cities include, Hubbard population 7,369, Cortland population 6,741, Warren population 3,922 and Lordstown population 3,244. See all Trumbull County cities & populated places.

Trumbull County Populated Places (more)

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

City Name Population Title
Niles 18,050 City in Trumbull County, Ohio
Girard 9,159 Town in Ohio
Brookfield 8,261 Township of Ohio
Hubbard 7,369 City in Ohio, USA
Cortland 6,741 City in Ohio
Howland Center 6,351 Census-designated place in Trumbull County, Ohio
Newton Falls 4,442 Village in Ohio, United States
Warren 3,922 City in the U.
Mineral Ridge 3,892 Census designated place
Vienna 3,768 Township in Trumbull County, Ohio
Southington 3,505 Township in Trumbull County, Ohio
Lordstown 3,244 City in Trumbull County, Ohio, United States of America
Mesopotamia 3,171 Township in Trumbull County, Ohio
McDonald 3,152 Human settlement in Ohio, USA
Braceville 2,673 Township in Trumbull County, Ohio
Mecca 2,516 City in United States of America

Trumbull County has 4 neighbours.

  • Warren


According to census records, the population of Trumbull County decreased by 6.87% in 10 years.

Year Population % Change Method
2010 210,312 - census
2011 208,834 -0.71% estimation process
2012 207,191 -0.79% estimation process
2013 206,328 -0.42% estimation process
2014 204,973 -0.66% estimation process
2015 203,328 -0.81% estimation process
2016 201,715 -0.8% estimation process
2017 200,281 -0.72% estimation process
2018 198,539 -0.88% estimation process
2019 197,974 -0.29% estimation process
2020 196,800 -0.6% estimation process

Comitatul Trumbull, Comte de Trumbull, Comté de Trumbull, Condado de Trumbull, Condado han Trumbull, Contea di Trumbull, Hrabstwo Trumbull, Okrug Trambul, Quan Trumbull, Quận Trumbull, Tramball, Trambull, Trumbul, Trumbull, Trumbull Comitatus, Trumbull Kun, Trumbull Kūn, Trumbull konderria, Trumbull megye, Trumbulli maakond, Trumbullin piirikunta, du lun ba er xian, mqatʿt trmbwl, shhrstan trambl awhayw, toranburu jun, trambula ka'unti, Округ Трамбул, Трамбалл, Трамбулл, Тръмбъл, شهرستان ترامبل، اوهایو, مقاطعة ترمبول, ٹرمبال کاؤنٹی, ٹرمبل کاؤنٹی، اوہائیو, ট্রাম্বুল কাউন্টি, トランブル郡, 杜倫巴爾縣

People born in Trumbull County (16)

People born in Trumbull County, including politician James McCleery, politician Ralph Hill, politician William A. Massey, .


  • Cyrus Nutt (United States educator and clergyman) he was born in 04/09/1814
  • Elmer Scipio Dundy Sr. (American judge) he was born in 05/03/1830
  • Francis Chapin (American artist (1899-1965)) he was born in 14/02/1899
  • John Ghindia (American football player (1925-2012)) he was born in 12/10/1925
  • Milton Sutliff (Ohio Jurist and Legislator) he was born in 06/10/1806
  • Thomas J. Turner (American politician) he was born in 05/04/1815
  • Eugene Samuel Booth (American missionary) he was born in 16/08/1850
  • Isaac Gause (United States Army Medal of Honor recipient) he was born in 09/12/1843
  • S. S. Cook (American politician) he was born in 03/11/1832
  • Miles Bartholomew (inventor) he was born in 03/02/1844
  • William J. Root (American photographer) he was born in 01/12/1854
  • Charles F. McCombs he was born in 01/01/1887
  • Joe McGill he was born in 01/01/1924

Ohio Other Counties (more counties)

County Name Population Title
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Hamilton County 817,985 County in New York, United States
Summit County 538,866 County in northern Utah, United States
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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