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is a city in Union County, North Carolina, United States. The population was 26,228 at the 2000 census. It is the seat of government of Union County.
Monroe is located at (34.988760, -80.549792). Charlotte-Monroe Executive Airport (EQY) is located five miles to the northwest of Monroe.
According to the United States Census Bureau, the city has a total area of 24.9 square miles (64.4 km²), of which, 24.6 square miles (63.6 km²) of it is land and 0.3 square miles (0.7 km²) of it (1.13%) is water.