Maplewood is a suburban township in Essex County, New Jersey, United States. As of the 2010 United States Census, the township’s population was 23,867.
According to the United States Census Bureau, the township had a total area of 3.879 square miles , including 3.877 square miles of land and 0.002 square miles of water. A pond is in Memorial Park, the Rahway River runs through the town, and there is a municipal pool club with four man-made pools of water; the remainder of the area is land.
The township shares a border with West Orange and South Orange to the north, Newark and Irvington to the east, Union (in Union County) to the south, and Millburn to the west.
Unincorporated communities, localities and place names located partially or completely within the township include Hilton and Valley View.