Prefix Information

The prefix 203 is part of area code 773 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (773-203-0000 through 773-203-9999).

Browse Numbers in This Prefix

773-203-0000-0999 773-203-1000-1999 773-203-2000-2999 773-203-3000-3999 773-203-4000-4999 773-203-5000-5999 773-203-6000-6999 773-203-7000-7999 773-203-8000-8999 773-203-9000-9999

Sample Numbers

(773) 203-0000 (773) 203-1234 (773) 203-2000 (773) 203-3333 (773) 203-4444 (773) 203-5555 (773) 203-6000 (773) 203-7777 (773) 203-8888 (773) 203-9999