|
Plymouth County Massachusetts ☎ +1 508-830-9100 Last Updated: 09/29/2026 |
| Plymouth County is a county in the U.S. state of Massachusetts, south of Boston. As of the 2020 census, the population was 530,819. Its county seats are Plymouth and Brockton. Plymouth County is home to some of the most renowned historical monuments and beautiful coastal landscapes. | |
| Plymouth County is where the Mayflower came ashore 400 years ago, bringing with it English pilgrims who helped found the nation. | |