Concord (/?ka?.k??d/, not /?k?n.k??d/) is a town in Middlesex County, Massachusetts, in the United States. At the 2010 census, the town population was 17,668. The United States Census Bureau considers Concord part of Greater Boston. The town center is located near where the confluence of the Sudbury and Assabet rivers forms the Concord River.
The area which became the town of Concord was originally known as "Musketaquid", situated at the confluence of the Sudbury and Assabet rivers. The name Musketaquid was an Algonquian word for "grassy plain", fitting the area's low-lying marshes and kettle holes. Native Americans had cultivated corn crops there; the rivers were rich with fish and the land was lush and arable. However, the area was largely depopulated by thesmallpox plague that swept across the Americas after the arrival of Europeans.