Shirley, Massachusetts, is a small town located in Middlesex County. It was incorporated in 1775 and has a rich history, including its role in the American Revolutionary War. The town is known for its scenic landscapes and rural charm, making it a peaceful place to live. The population of Shirley is around 7,000 residents, and it covers an area of approximately 12 square miles. The town features several parks and recreational areas, including the Shirley Town Park and Nashua River, which provide opportunities for outdoor activities like hiking and fishing.