Maplewood is located at 38°36′45″N 90°19′17″W﻿ / ﻿38.61250°N 90.32139°W﻿ / 38.61250; -90.32139 (38.612535, -90.321339). According to the United States Census Bureau, the city has a total area of 1.56 square miles (4.04 km 2), all of it land.