Prefix Information

The prefix 504 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-504-0000 through 312-504-9999).

Browse Numbers in This Prefix

312-504-0000-0999 312-504-1000-1999 312-504-2000-2999 312-504-3000-3999 312-504-4000-4999 312-504-5000-5999 312-504-6000-6999 312-504-7000-7999 312-504-8000-8999 312-504-9000-9999

Sample Numbers

(312) 504-0000 (312) 504-1234 (312) 504-2000 (312) 504-3333 (312) 504-4444 (312) 504-5555 (312) 504-6000 (312) 504-7777 (312) 504-8888 (312) 504-9999