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  3. 421 Prefixes

421 Area Code Phone Directory

Phone Prefixes in the 421 Area Code

(421) 2XX (421) 3XX (421) 4XX (421) 5XX (421) 6XX (421) 7XX (421) 8XX (421) 9XX

Information for Area Code 421

State: PA
Largest City in Area: PITTSBURGH

Where is Area Code 421?

Area code (421) is in the state of PA. Below, are the major cities in the area code (421).

Area Codes Starting with 4

Major Cities in 421

PITTSBURGH, PA (195)
OVERLAND PARK, KS (69)
KANSAS CITY, MO (66)
SHAWNEE, KS (38)
DALLAS, TX (29)
LENEXA, KS (27)
OLATHE, KS (27)
SHAWNEE MISSION, KS (26)
CHATTANOOGA, TN (24)
MISSION, KS (22)