Delaware phone numbers and area codes
Delaware has 1 area code and 656 assigned prefixes.
Look at a prefix's carrier mix below, or look up a full number on the home page.
- Mobile carrier 27%
- Local phone company 26%
- Internet / business phone carrier 43%
- Paging service 1%
- Phone company 4%
Area codes in Delaware
| Code | Area | Prefixes here |
|---|---|---|
| 302 | Delaware (all) | 656 |
Biggest local calling areas
Numbers are assigned to rate centers. These have the most prefixes in Delaware (the number is how many).
Wilmington170Newark54Dover49New Castle42Georgetown40Milford34Camden29Delawarecy23Holly Oak23Hockessin19Middletown17Rehoboth15Lewes12Smyrna11Ocean View10Angola9Delmar9Seaford9Laurel9Selbyville9Frederica7Bridgeville7Felton7Millsboro7Harrington7Dagsboro6Hartly6Milton6Greenwood5Gumboro5
Carriers in Delaware
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| Verizon (local phone) | Local phone company | 172 | 26% |
| Windstream (PAETEC) | Internet / business phone carrier | 74 | 11% |
| Verizon Wireless | Mobile carrier | 60 | 9% |
| Onvoy | Internet / business phone carrier | 58 | 9% |
| AT&T Mobility | Mobile carrier | 54 | 8% |
| T-Mobile (including Sprint) | Mobile carrier | 51 | 8% |
| MCImetro (Verizon Business) | Internet / business phone carrier | 39 | 6% |
| Teleport Communications America | Internet / business phone carrier | 34 | 5% |
| Level 3 (Lumen) | Internet / business phone carrier | 27 | 4% |
| Bandwidth | Internet / business phone carrier | 16 | 2% |
| Coretel Delaware | Phone company | 16 | 2% |
| Comcast | Internet / business phone carrier | 9 | 1% |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.