Lucas County is a county located in the state of Ohio, United States. As of the 2000 census, the population was 455,054. Its county seat is Toledo. Lucas County was named for Robert Lucas, 12th governor of Ohio, in 1835 during his second term. Its establishment was one of the most significant provocations to spark the Toledo War.
Lucas County lies on Lake Erie, bordering Lenawee and Monroe counties to the north. The mouth of the Maumee River forms the port of Toledo. Prior to the Toledo War, the original state line was drawn as an east-west line. The southern border of Lucas County, east of the Maumee River, is the modern day incarnation of this line. The old state line can be seen via maps and areal photographs which show the intersection of two unique land surveys. Markers also exist at various locations throughout the county.
- See also: Toledo War
On August 20, 1794, near the present-day town of Maumee, American forces led by General Anthony Wayne won a decisive victory over Indian forces at the Battle of Fallen Timbers. The battle opened the entire Northwest Territory for settlement.
Lucas County was formally organized in 1835. At that time, Ohio and Michigan Territory disputed the ownership of the strip of land along the border. As a move in the dispute, Ohio formally organized part of the disputed area as Lucas County, naming it after the incumbent governor of Ohio, Robert Lucas.