Home › Top 5 Insurance Company in Essex, Connecticut Find best Insurance Company in Essex, Connecticut, with all necessary contact information, including addresses, phone numbers, working hours, map locations, and website links. Optisure - Mather & Pitts Insurance Inc US, Essex, CT 0642646 Plains Rd John M. Glover Insurance Agency US, Essex, CT 06426190 Westbrook Rd Hillcrest Agency, LLC US, Essex, CT 0642628 Main St The Magnolia Agency US, Essex, CT 064265 Essex Square Suite 2B The Lift Factor US, Essex, CT 0642638 Plains Rd