| 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 |
|---|---|---|---|
| 302-224 | New Castle | Newark, DE | Cavalier Telephone (mid-atlantic) |
| 302-225 | New Castle | Wilmington, DE | Cavalier Telephone (mid-atlantic) |
| 302-226 | Sussex | Rehoboth, DE | Verizon Delaware |
| 302-227 | Sussex | Rehoboth, DE | Verizon Delaware |
| 302-228 | Kent | Milford, DE | New Cingular Wireless PCS - DC |
| 302-229 | New Castle | New Castle, DE | New Cingular Wireless PCS - DC |
| 302-230 | New Castle | Wilmington, DE | Cavalier Telephone (mid-atlantic) |
| 302-231 | Sussex | Harbeson, DE | Tcg New Jersey - PA |
| 302-232 | Sussex | Bridgeville, DE | Tcg New Jersey - PA |
| 302-233 | Kent | Camden, DE | Tcg New Jersey - PA |
| 302-234 | New Castle | Hockessin, DE | Verizon Delaware |
| 302-235 | New Castle | Hockessin, DE | Verizon Delaware |
| 302-236 | Sussex | Georgetown, DE | Cellco Partnership DBA Verizon Wireless |
| 302-238 | Sussex | Frankford, DE | Verizon Delaware |
| 302-239 | New Castle | Hockessin, DE | Verizon Delaware |
| 302-240 | Neutral Tandem-delaware | ||
| 302-241 | Kent | Dover, DE | Sprint Spectrum L.p. |
| 302-242 | Kent | Camden, DE | Cellco Partnership DBA Verizon Wireless |
| 302-243 | New Castle | Wilmington, DE | Usa Mobility Wireless |
| 302-245 | 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.