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 dissenting vote so that only George Washington would have the honor of unanimous election. Plumer never mentioned Washington in his speech explaining his vote to the other New Hampshire electors. Five new states were admitted to the Union while Monroe was in office: When his presidency ended on March 4, 1825, James Monroe resided at Monroe Hill, what is now included in the grounds of the University of Virginia. He served on the university's Board of Visitors under Jefferson and under the second rector James Madison, both former presidents, almost until his death. He and his wife lived at Oak