East Haddam, CT

ZIP code 06423 encompasses East Haddam, Connecticut, with a population of around 9,100 residents. The area is known for its scenic beauty, including the majestic Goodspeed Opera House, a renowned theatre located on the banks of the Connecticut River. Other notable landmarks in this ZIP code include Gillette Castle State Park, home to a unique castle built by actor William Gillette, and the historic East Haddam Swing Bridge.