| 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 |
|---|---|---|---|
| 302-315 | Kent | Milford, DE | Global Naps South |
| 302-316 | Sussex | Millsboro, DE | Level 3 Communications |
| 302-317 | New Castle | New Castle, DE | Level 3 Communications |
| 302-318 | New Castle | Newark, DE | Level 3 Communications |
| 302-319 | New Castle | Wilmington, DE | Cellco Partnership DBA Verizon Wireless |
| 302-320 | New Castle | Wilmington, DE | Verizon Delaware |
| 302-321 | Sussex | Dagsboro, DE | Cavalier Telephone (mid-atlantic) |
| 302-322 | New Castle | New Castle, DE | Verizon Delaware |
| 302-323 | New Castle | New Castle, DE | Verizon Delaware |
| 302-324 | New Castle | New Castle, DE | Verizon Delaware |
| 302-325 | New Castle | New Castle, DE | Verizon Delaware |
| 302-326 | New Castle | New Castle, DE | Verizon Delaware |
| 302-327 | New Castle | New Castle, DE | Verizon Delaware |
| 302-328 | New Castle | New Castle, DE | Verizon Delaware |
| 302-329 | Sussex | Milton, DE | Cavalier Telephone (mid-atlantic) |
| 302-330 | Sussex | Harbeson, DE | Cavalier Telephone (mid-atlantic) |
| 302-331 | Kent | Camden, DE | Sprint Spectrum L.p. |
| 302-332 | New Castle | Wilmington, DE | Cellco Partnership DBA Verizon Wireless |
| 302-333 | New Castle | Wilmington, DE | Leap Wireless Intl DBA Cricket Comm |
| 302-334 | New Castle | Claymont, DE | Cavalier Telephone (mid-atlantic) |
There are 525 prefixes, In the code area, the major cities are Dover, DE;Newark, DE;Wilmington, DE. The major city is Wilmington.