Prefix Information

The prefix 603 is part of area code 708 serving Cicero, Illinois.

This exchange contains 10,000 possible phone numbers (708-603-0000 through 708-603-9999).

Browse Numbers in This Prefix

708-603-0000-0999 708-603-1000-1999 708-603-2000-2999 708-603-3000-3999 708-603-4000-4999 708-603-5000-5999 708-603-6000-6999 708-603-7000-7999 708-603-8000-8999 708-603-9000-9999

Sample Numbers

(708) 603-0000 (708) 603-1234 (708) 603-2000 (708) 603-3333 (708) 603-4444 (708) 603-5555 (708) 603-6000 (708) 603-7777 (708) 603-8888 (708) 603-9999