East Haddam, CT

ZIP code 06423 belongs to East Haddam, Connecticut. This charming area is home to the picturesque Goodspeed Opera House, a historic theater renowned for its Broadway-caliber musicals. The East Haddam Swing Bridge, offering scenic views of the Connecticut River, is another notable landmark. Visitors and residents alike can enjoy the beauty of Gillette Castle State Park, a unique park featuring the historic Gillette Castle, once home to actor William Gillette.