The area of Connecticut was part of the original territory of the United States. It was chartered as a colony in 1662. In 1786, it ceded area to the United States' government that became part of the Northwest Territory in 1787, but Connecticut retained the "Connecticut Western Reserve," a 120-mile strip of territory in present-day northeast Ohio. Connecticut did not cede this territory until 1800. Connecticut ratified the U.S. Constitution on January 9, 1788; it was the fifth of the original 13 states to join the Union. Its boundary was generally the same as the present state (excluding the Connecticut Western Reserve), although the boundary between Connecticut and Massachusetts was changed slightly in 1804.