Monroe, Ohio Monroe, Ohio Monroe is a city located in east central Butler and west central Warren counties in the southwestern part of the U.S. state of Ohio. As of the 2010 Census, the city population was 12,442, up from 4,008 in 1990. Monroe was laid out in 1817 on the Dayton and Cincinnati pike. The city is named for President James Monroe, fifth President of the United States. In the early 1830s, Monroe contained one store and 119 inhabitants. Monroe is located at (39.444658, −84.364044). According to the United States Census Bureau, the city has a total area of , of
James Monroe Trotter African Americans. His son William Monroe Trotter became a rights activist and was founder and editor of the "Boston Guardian", a progressive African American newspaper. James Monroe Trotter was born on February 7, 1842, twenty-five miles south of Vicksburg in the once-thriving community of Grand Gulf, Mississippi, in Claiborne County, Mississippi, although some sources give Trotter's date of birth as November 8, 1842. James was born into slavery; his mother Letitia was a slave and his father was her white master, Richard S. Trotter, then unmarried. After Richard Trotter married in 1854, he freed Letitia and their mixed-race children: James