Seneca County is a county located in the northwestern part of the U.S. state of Ohio. As of the 2020 census, the population was 55,069. Its county seat is Tiffin. The county was created in 1820 and organized in 1824. It is named for the Seneca Indians, the westernmost nation of the Iroquois Confederacy. This people were based in present-day New York but had territory extending into Pennsylvania and Ohio. Seneca County comprises the Tiffin, OH Micropolitan Statistical Area, which is also included in the Findlay–Tiffin, OH Combined Statistical Area.
Seneca County Justice Center in Tiffin, Ohio
Northwest Ohio, or Northwestern Ohio, consists of multiple counties in the northwestern corner of the US state of Ohio. This area borders Lake Erie, Southeast Michigan, and northeastern Indiana. Some areas are also considered the Black Swamp area. The Toledo metropolitan area is part of the region.
Toledo is the region's principal and largest city
Bowling Green is Northwest Ohio's fourth largest city, and largest Toledo suburb
Downtown Lima, Ohio on a late March day
Defiance, Ohio is the seventh largest town in the region