Northern boundary of Massachusetts

The northern boundary of Massachusetts is a series of straight line segments running from the northwestern corner eastward. Granite markers positioned along this line precisely indicate where the state of Massachusetts meets neighboring territories.

King George II established the current northern boundary in 1740, positioning it three miles from the Merrimack River. This decision shaped the territorial divisions that define the states today.

The boundary reflects how different states developed their own ways of organizing land and government. Visitors walking along the marker line notice how the landscape and local character shift between the two sides.

Granite markers placed along the boundary line help visitors locate the exact position where states meet. Following these markers from west to east provides a clear path for exploring the division.

A copper bolt marks the exact point where the borders of Vermont, Massachusetts, and New Hampshire meet. This three-state junction is a rare feature that draws those interested in boundary geography.

Location: Vermont

GPS coordinates: 42.74580,-73.26500

Latest update: December 10, 2025 16:01