The Willimantic River borders the town on the west. Willington is about 25 miles northeast of Hartford on Interstate 84, which also provides a connection to Boston, via the Massachusetts Turnpike. Providence, RI is accessible via U.S. Route 44. Larger communities nearby include Coventry, Stafford, Tolland, and Willimantic. The University of Connecticut is located in adjacent Mansfield. The new public library (formerly located within Hall Memorial middle school) has been completed and opened as of fall 2006.
Willington was incorporated in May, 1727.