Revere borders the towns of Winthrop and Chelsea, and the Boston neighborhood of East Boston to the south, Everett and Malden to the west, Saugus and Lynn to the north, and the Atlantic Ocean to the east. According to the United States Census Bureau, the city has a total area of 10 square miles (26 km²), of which 5.9 square miles (15 km²) is land and 4.1 square miles (11 km²) (40.98%) is water.

Revere’s first inhabitants were Native Americans who belonged to the Pawtucket tribe and were known as the Rumney Marsh Indians. The leader, or sachem, of the Pawtuckets was Nanepashemet of Lynn. In 1616, an epidemic, probably smallpox, swept the region, killing thousands in its wake. Nanepashemet retired to the Mystic River, in what is now Medford, but was found murdered in 1619 at his fort on the brow of Rock Hill overlooking the river. Three sons succeeded him in his reign. One of them, Wonohaquaham, also called Sagamore John, had jurisdiction over the Native Americans at Winnisemmit (later Chelsea) and Rumney Marsh.

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