COMPLETE GUIDE FOR 203, 860, 475, 959

Connecticut Area Codes: What You Need to Know About 203, 860, 475, and 959 Wondering what area code 203 check here or 860 means? This guide has all the details. Map of Connecticut Area Codes What Are the Area Codes in Connecticut? Connecticut is served by four area codes: 203, 860, 475, and 959. 203: Original area code, covering Southwest