378 Area Code Phone Directory

Phone Prefixes in the 378 Area Code

(378) 2XX (378) 3XX (378) 4XX (378) 5XX (378) 6XX (378) 7XX (378) 8XX (378) 9XX

State: GA

Largest City in Area: ATLANTA

Area code (378) is in the state of GA. Below, are the major cities in the area code (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)