378 Area Code Information
State: GA
Largest City in Area: ATLANTA
Where is Area Code 378? Area code (378) is in the state of GA. Below, are the major cities in the area code (378).
Major Cities in 378
- ATLANTA, GA (55)
- MIAMI, FL (22)
- MARIETTA, GA (22)
- DECATUR, GA (21)
- LAWRENCEVILLE, GA (18)
- STONE MOUNTAIN, GA (17)
- TOPEKA, KS (16)
- LITHONIA, GA (14)
- ALPHARETTA, GA (12)
- ACWORTH, GA (11)
Zip Codes in 378