Summit County is an urban county located in the northeast region of the U.S. state of Ohio. As of the 2020 census, the population was 540,428, making it the fourth-most populous county in Ohio. Its county seat and most populous city is Akron. The county was formed on March 3, 1840, from portions of Medina, Portage and Stark counties. It was named Summit County because the highest elevation on the Ohio and Erie Canal is in the county. Summit County is part of the Akron, OH Metropolitan Statistical Area, which is also included in the Cleveland-Akron-Canton, OH Combined Statistical Area.

Geography

According to the United States Census Bureau, the county has a total area of , of which is land and (1.7%) is water. The largest portion of Cuyahoga Valley National Park is in the northern part of the county. The southern border of the former Connecticut Western Reserve passes through the southern part of the county, leading to jogs in the east and west borders of the county.

Major highways

Adjacent counties

  • Cuyahoga Countynorthwest
  • Geauga Countynortheast
  • Portage Countyeast
  • Stark Countysouth
  • Wayne Countysouthwest
  • Medina Countywest

National protected area

  • Cuyahoga Valley National Park (also extends north into Cuyahoga County)

Demographics