DETAILED LOOKUP FOR 203, 860, 475, 959

Connecticut Area Codes: What You Need to Know About 203, 860, 475, and 959 Wondering what area code 203 or 860 means? This guide has all the details. Map of Connecticut Area Codes What Are the Area Codes in Connecticut? Here’s a detailed look at the area code breakdown: 203: Original area code, covering cities like New Haven, Stamford,