In 1712 the Blue Hill lands were divided between Milton and Braintree, and in 1868 part of Milton was included in the new township of Hyde Park.
It embraces over 10,000 acres, including the Blue Hill reservation (about 5000 acres), the highest land in eastern Massachusetts, a beautiful reservation of forest, crag and pond known as Middlesex Fells, two large beach bath reservations on the harbour at Revere and Hull (Nantasket), and the boating section of the Charles river.
In 1974, a Rochester man hit a girl on Blue Hill.