Sister cities of Plymouth, Massachusetts

Plymouth /ˈplɪməθ/ (historically known as Plimouth and Plimoth) is a town in Plymouth County, Massachusetts, United States. Plymouth holds a place of great prominence in American history, folklore and culture, and is known as "America's Hometown." Plymouth was the site of the colony founded in 1620 by the Pilgrims, passengers of the famous ship the Mayflower. Plymouth is where New England was first established. It is the oldest municipality in New England and one of the oldest in the United States. The town has served as the location of several prominent events, the most notable being the First Thanksgiving feast. Plymouth served as the capital of Plymouth Colony from its founding in 1621 until the colony's merger with the Massachusetts Bay colony in 1691.

Plymouth is the largest municipality in Massachusetts by area. The population is 56,468 according to the 2010 U.S. Census. Plymouth is one of two county seats of Plymouth County, the other being Brockton.

Plymouth is located approximately 40 miles (64 km) south of Boston in a region of Massachusetts known as the South Shore. Throughout the 19th century, the town thrived as a center of ropemaking, fishing, and shipping, and once held the world's largest ropemaking company, the Plymouth Cordage Company. While it continues to be an active port, today the major industry of Plymouth is tourism. Plymouth is served by Plymouth Municipal Airport, and contains Pilgrim Hall Museum, the oldest continually operating museum in the United States.

As one of the country's first settlements, Plymouth is well known in the United States for its historical value. The events surrounding the history of Plymouth have become part of the mythology of the United States, particularly those relating to Plymouth Rock, the Pilgrims and the First Thanksgiving. The town itself is a popular tourist spot during the Thanksgiving holiday.