Prefix Information

The prefix 640 is part of area code 773 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (773-640-0000 through 773-640-9999).

Browse Numbers in This Prefix

773-640-0000-0999 773-640-1000-1999 773-640-2000-2999 773-640-3000-3999 773-640-4000-4999 773-640-5000-5999 773-640-6000-6999 773-640-7000-7999 773-640-8000-8999 773-640-9000-9999

Sample Numbers

(773) 640-0000 (773) 640-1234 (773) 640-2000 (773) 640-3333 (773) 640-4444 (773) 640-5555 (773) 640-6000 (773) 640-7777 (773) 640-8888 (773) 640-9999