Maplewood, incorporated in 1957, is a city in Ramsey County, Minnesota, United States. The population was 38,018 at the 2010 census. Maplewood is ten minutes' drive from downtown Saint Paul. It stretches along the northern and eastern borders of Saint Paul.
Maplewood is home to the corporate headquarters and main campus of 3M Corporation. The city is also home to the Maplewood Mall and St. John's Hospital.
According to the United States Census Bureau, the city has a total area of 17.99 square miles (46.59 km2), of which 16.98 square miles (43.98 km2) is land and 1.01 square miles (2.62 km2) is water.
U.S. Highway 61, Minnesota Highway 36, and Interstate Highways 35E, 94, 694, and 494 are six of the main routes in the city.
At the 2010 census there were 38,018 people, 14,882 households, and 9,620 families living in the city. The population density was 2,239.0 inhabitants per square mile (864.5/km2).