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Delaware Area Codes

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State: Delaware (DE)
Area Codes: 1
Timezone: Eastern (EDT)
Current Time: 9:43 PM

About Delaware Area Codes

Delaware (DE) uses 1 telephone area code to serve its residents and businesses. With an estimated population of 565,804, Delaware is one of the smaller states in the North American Numbering Plan (NANP). The state is primarily in the Eastern Time Zone (EDT). The current local time in Delaware is 9:43 PM.

The largest cities in Delaware include Dover (pop. 117,282), Wilmington (pop. 70,166), Middletown (pop. 35,695), Newark (pop. 33,515) and Lewes (pop. 29,187) . Delaware has 3 counties spread across its territory. Each area code in DE covers a geographic region of the state, with some areas using overlay codes that share the same geographic territory as an existing area code.

When calling a Delaware phone number from outside the area code, you must dial the full 10-digit number: the 3-digit area code followed by the 7-digit local number. Many parts of Delaware now require 10-digit dialing even for local calls due to overlay area codes and the nationwide 988 Suicide & Crisis Lifeline implementation.

All Delaware Area Codes

The table below lists every active area code in Delaware, along with the major city served and other cities covered by each code.

Area Code Major City Other Cities
302 Dover Wilmington, Middletown, Newark, Lewes, Milford, Ocean View, Hockessin, Smyrna and more

Largest Cities in Delaware

These are the largest cities in Delaware by population, along with their primary area codes and counties.

City Population County
Dover 117,282 Kent County
Wilmington 70,166 New Castle County
Middletown 35,695 New Castle County
Newark 33,515 New Castle County
Lewes 29,187 Sussex County
Milford 22,102 Sussex County
Bear 20,850 New Castle County
Ocean View 14,360 Sussex County
Glasgow 14,359 New Castle County
Brookside 13,396 New Castle County

Frequently Asked Questions

Delaware has 1 active area code. These include 302 (Dover) .

Delaware is primarily in the Eastern Time Zone (EDT). The current local time is 9:43 PM.

The area code covering the most cities in Delaware is 302, which serves Dover and 39+ other communities.

Yes, most areas in Delaware now require 10-digit dialing (area code + 7-digit number) for all local calls. This requirement was implemented across the United States starting in October 2021 to support the 988 Suicide & Crisis Lifeline. Even if you are calling within the same area code, you need to dial all 10 digits.

To call a Delaware number from within the United States, dial the area code followed by the 7-digit phone number (e.g., 302-XXX-XXXX). From outside the US, dial your country's exit code, then 1 (the US country code), then the full 10-digit number.

Delaware has 3 counties. The state's total estimated population is 565,804, spread across these counties and served by 1 area code.

Dover is served by area code 302 .
Delaware at a Glance
  • Abbreviation DE
  • Area Codes 1
  • Population 565,804
  • Counties 3
  • Cities 77
  • Time Zone Eastern
  • Current Time 9:43 PM
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