Monroe is a city in the U.S. state of Michigan located on the western shore of Lake Erie. It is the county seat and largest city of Monroe County. Monroe had a population of 20,733 in the 2010 census. The city is bordered on the south by Monroe Charter Township, but both are politically independent. Monroe is located approximately 14 miles (23 km) north of Toledo, Ohio, and 25 miles (40 km) south of Detroit. The United States Census Bureau lists Monroe as the core city in the Monroe Metropolitan Area, which had a population of 152,021 in 2010. Monroe is officially part of the Detroit-Ann Arbor-Flint combined statistical area, and the city is sometimes unofficially included as a northerly extension of the Toledo Metropolitan Area.
The Monroe area saw several military conflicts during the War of 1812 with Great Britain and is best remembered for the Battle of Frenchtown. In 1817, portions of the Frenchtown settlement along the River Raisin were platted and renamed Monroe after then-president James Monroe. When Michigan became a state in 1837, Monroe was incorporated as a city.
Monroe is known as the childhood residence of George Armstrong Custer and other members of his family, including his brother Boston Custer and wife Elizabeth Bacon. Several structures are named after Custer, including Custer Airport. The city also contains numerous other historic structures. In 1928, La-Z-Boy was founded in Monroe; this continues to be the company's world headquarters.