Prefix Information

The prefix 813 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-813-0000 through 312-813-9999).

Browse Numbers in This Prefix

312-813-0000-0999 312-813-1000-1999 312-813-2000-2999 312-813-3000-3999 312-813-4000-4999 312-813-5000-5999 312-813-6000-6999 312-813-7000-7999 312-813-8000-8999 312-813-9000-9999

Sample Numbers

(312) 813-0000 (312) 813-1234 (312) 813-2000 (312) 813-3333 (312) 813-4444 (312) 813-5555 (312) 813-6000 (312) 813-7777 (312) 813-8888 (312) 813-9999