| 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 |
|---|---|---|---|
| 302-375 | New Castle | Wilmington, DE | Cavalier Telephone (mid-atlantic) |
| 302-376 | New Castle | Middletown, DE | Verizon Delaware |
| 302-377 | New Castle | Wilmington, DE | Sprint Spectrum L.p. |
| 302-378 | New Castle | Middletown, DE | Verizon Delaware |
| 302-379 | New Castle | Wilmington, DE | Cellco Partnership DBA Verizon Wireless |
| 302-380 | New Castle | Bear, DE | Xo Delaware |
| 302-381 | Sussex | Georgetown, DE | Cellco Partnership DBA Verizon Wireless |
| 302-382 | Kent | Camden, DE | Cellco Partnership DBA Verizon Wireless |
| 302-383 | New Castle | Wilmington, DE | Cellco Partnership DBA Verizon Wireless |
| 302-384 | New Castle | Wilmington, DE | Nationsline Delaware |
| 302-385 | New Castle | Wilmington, DE | Xo Delaware |
| 302-387 | Kent | Camden, DE | Cellco Partnership DBA Verizon Wireless |
| 302-388 | New Castle | Wilmington, DE | Cellco Partnership DBA Verizon Wireless |
| 302-389 | Kent | Smyrna, DE | Cavalier Telephone (mid-atlantic) |
| 302-391 | New Castle | Newark, DE | Verizon Delaware |
| 302-392 | New Castle | Bear, DE | Cavalier Telephone (mid-atlantic) |
| 302-393 | Kent | Milford, DE | Sprint Spectrum L.p. |
| 302-394 | New Castle | Wilmington, DE | Peerless Network Of Delaware |
| 302-395 | New Castle | New Castle, DE | Verizon Delaware |
| 302-396 | Sussex | Georgetown, DE | Cellco Partnership DBA Verizon Wireless |
There are 525 prefixes, In the code area, the major cities are Dover, DE;Newark, DE;Wilmington, DE. The major city is Wilmington.