991 Area Code Phone Directory

Information for Area Code 991

State: IL
Largest City in Area: CHICAGO

Where is Area Code 991?

Area code (991) is in the state of IL. Below, are the major cities in the area code (991).

Major Cities in 991

CHICAGO, IL (115)
HOUSTON, TX (89)
LOS ANGELES, CA (52)
SAINT LOUIS, MO (52)
DETROIT, MI (51)
CINCINNATI, OH (50)
DALLAS, TX (50)
FORT WORTH, TX (42)
SAN DIEGO, CA (37)
ORLANDO, FL (36)

Zip Codes in 991