421 Area Code Information
State: PA
Largest City in Area: PITTSBURGH
Where is Area Code 421? Area code (421) is in the state of PA. The PeopleSearchNow database has 1,314 records on file with a phone number in the area code of (421). 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)
Zip Codes in 421
- 15120
- 15206
- 15209
- 15210
- 15212
- 15214
- 15217
- 15221
- 15235
- 64105
- 64114
- 66062
- 66202
- 66203
- 66208
- 66210
- 66212
- 66214
- 66215
- 66216