| District of Delaware area codes: 302 | |
|---|---|
| Country | United States |
| State/Province | Delaware |
| Major City | Wilmington |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 302-397 | New Castle | Wilmington, DE | Xo Delaware |
| 302-398 | Kent | Harrington, DE | Verizon Delaware |
| 302-399 | Kent | Dover, DE | Sprint Spectrum L.p. |
| 302-400 | New Castle | New Castle, DE | Xo Delaware |
| 302-401 | Kent | Dover, DE | Level 3 Communications |
| 302-402 | Sussex | Ocean View, DE | Level 3 Communications |
| 302-403 | Sussex | Rehoboth, DE | Global Naps South |
| 302-404 | Sussex | Seaford, DE | Level 3 Communications |
| 302-405 | Sussex | Selbyville, DE | Global Naps South |
| 302-406 | Kent | Smyrna, DE | Global Naps South |
| 302-407 | New Castle | Wilmington, DE | Level 3 Communications |
| 302-408 | New Castle | Wilmington, DE | Xo Delaware |
| 302-409 | New Castle | Wilmington, DE | Bandwidth.com Clec |
| 302-412 | New Castle | Wilmington, DE | Nutel Comm DBA Arbros Comm Lic Company Ne- De |
| 302-413 | New Castle | New Castle, DE | Verizon Delaware |
| 302-414 | New Castle | New Castle, DE | Xo Delaware |
| 302-415 | New Castle | Wilmington, DE | Cellco Partnership DBA Verizon Wireless |
| 302-416 | New Castle | Wilmington, DE | Cellco Partnership DBA Verizon Wireless |
| 302-417 | New Castle | Wilmington, DE | Xo Delaware |
| 302-418 | New Castle | Wilmington, DE | Xo Delaware |
There are 525 prefixes, In the code area, the major cities are Dover, DE;Newark, DE;Wilmington, DE. The major city is Wilmington.