Delaware Area Codes
Data last updated: June 25, 2026
Area Codes in Delaware
| NPA | Major Cities | Status | Exchanges | Overlay |
|---|---|---|---|---|
| 302 | Philadelphia, King of Prussia, Norristown | Active | 783 | No |
Top Carriers in Delaware
| Carrier | OCN | NXX Count |
|---|---|---|
| VERIZON DELAWARE, INC. | 9210 | 172 |
| PAETEC ITEL, LLC | 829J | 74 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE | 6393 | 59 |
| NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | 53 |
| OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | 53 |
| ONVOY, LLC - DE | 969E | 51 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 36 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | 34 |
| LEVEL 3 COMMUNICATIONS, LLC - DE | 4801 | 27 |
| CORETEL DELAWARE, INC. - DE | 1991 | 16 |