COMPLETE GUIDE FOR 203, 860, 475, 959

Connecticut Area Codes: What You Need to Know About 203, 860, 475, and 959 If you're trying to figure out area codes in Connecticut, you're not alone. Map of Connecticut Area Codes What Are the Area Codes in Connecticut? Connecticut is served by a combination of original and overlay area codes: 203, 860, 475, and 959. 203: Established in