Monroe, North Carolina Monroe, North Carolina Monroe is a city in and the county seat of Union County, North Carolina, United States. The population increased from 26,228 in 2000 to 32,797 in 2010. It is within the rapidly growing Charlotte-Gastonia-Rock Hill, NC-SC Metropolitan area. Monroe has a council-manager form of government. Monroe was founded as a planned settlement. In 1843, the first Board of County Commissioners, appointed by the General Assembly, selected an area in the center of the county as the county seat, and Monroe was incorporated that year. It was named for James Monroe, the country’s fifth president. It became a
James Monroe of Virginia and rose to national prominence as a diplomat in France when he helped negotiate the Louisiana Purchase in 1803. During the War of 1812, Monroe served in critical roles as Secretary of State and the Secretary of War under President James Madison. Facing little opposition from the waning Federalist Party, Monroe was easily elected president in 1816, winning over eighty percent against Rufus King (who hadn't even been chosen by a convention since the Federalists were too weak to organize) of the electoral vote and becoming the last president during the First Party System era of American politics.