Prefix Information

The prefix 678 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-678-0000 through 312-678-9999).

Browse Numbers in This Prefix

312-678-0000-0999 312-678-1000-1999 312-678-2000-2999 312-678-3000-3999 312-678-4000-4999 312-678-5000-5999 312-678-6000-6999 312-678-7000-7999 312-678-8000-8999 312-678-9000-9999

Sample Numbers

(312) 678-0000 (312) 678-1234 (312) 678-2000 (312) 678-3333 (312) 678-4444 (312) 678-5555 (312) 678-6000 (312) 678-7777 (312) 678-8888 (312) 678-9999