According to the United States Census Bureau, Somerville has a total area of 4.2 square miles (11 km2), of which 4.1 square miles (11 km2) is land and 0.1 square miles (0.26 km2) (2.61%) is water. Somerville is bordered by the cities of Cambridge, Medford, Everett, Arlington and the Boston neighborhood of Charlestown. It is located on the west bank of the Mystic River.
Millennia ago, glaciation left a series of drumlins running west to east across the landscape of what would become Somerville. These ridges would later become known as the "Seven Hills" of Somerville (like many other cities clai...
Source: Wikipedia (as of 04/11/2019). Read more from Wikipedia