Concord 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, an Algonquian word for "grassy plain". It was one of the scenes of the Battle of Lexington and Concord, the initial conflict in the American Revolutionary War. It developed into a remarkably rich literary center during the mid-nineteenth century. Featured were Ralph Waldo Emerson, Nathaniel Hawthorne, Amos Bronson Alcott, Louisa May Alcott and Henry David Thoreau, all of whose homes are preserved in modern-day Concord. The now-ubiquitous Concord grape was developed here.