{{Short description|US telephone area code for Delaware}} {{Use mdy dates|date=February 2026}} {{Use American English|date=February 2026}} [[Image:Area code 302.png|thumb|300px|Numbering plan areas and area codes of Delaware]] '''Area code 302''' is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Delaware. It is Delaware's only area code, and was assigned in 1947 as one of the original North American area codes.
Despite the rapid growth in telecommunication services in the northern part of the state, area code 302 is not projected to exhaust its numbering pool until 2033.
Prior to October 2021, area code 302 had telephone numbers assigned for the central office code 988. In 2020, ''988'' was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area code was therefore scheduled to transition to ten-digit dialing by October 24, 2021.<ref name="pl556">{{cite web|url=https://nationalnanpa.com/pdf/PL_556.pdf|date=January 8, 2021|publisher=North American Numbering Plan Administrator |title=Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)|access-date=March 9, 2021}}</ref>
Delaware shares a LATA with Philadelphia and the Pennsylvania side of the Delaware Valley.<ref>{{cite web |url=http://www.latamaps.com/Telecom_Maps/Regional_LATA_maps/Mid-Atlantic_LATA_Map_-_Maponics.pdf |title=Archived copy |access-date=2017-09-24 |url-status=dead |archive-url=https://web.archive.org/web/20170519032549/http://www.latamaps.com/Telecom_Maps/Regional_LATA_maps/Mid-Atlantic_LATA_Map_-_Maponics.pdf |archive-date=2017-05-19 }}</ref>
==References== {{reflist}}
==External links== {{Area code footer|Map=DE}}
{{Area code box |State=DE |This=302 |S1=MD|S2=NJ|S3=PA |N=610/484/835 |S=410/443/667 |E=856, 609/640, Atlantic Ocean |W=410/443/667 }}
{{Area code list}}
302 302 Category:Telecommunications-related introductions in 1947