Zip Codes & Area Codes

The cities listed with each area code are the major cities for that area code; this originated as the city in which the switch computer for that area code is located, but is no longer the case.

https://www.bennetyee.org/ucsd-pages/area.html

Area code maps are available for the U.S. states and Canada.

https://www.nanpa.com/number_resource_info/area_code_maps.html

The AmeriCom Long Distance Area Code Service

https://decoder.americom.com/

https://superphone.net/area_state.html

https://SuperPhone.net/areacode.html

Cedar Zip Code Search

https://www.cedar.buffalo.edu/AdServ/zip-search.html

Free United States ZIP code lookup

https://www.downloadzipcode.com

Search for US Area Codes, Zip Codes, and Cities. Zip Multiple cities are handled. Over 80,000 entries. Crossreferences to State/County.

https://www.jcsm.com/

Given a valid U.S. postal address, this server attempts to rewrite the address in the proper format along with the ZIP+4 code.

https://www.cedar.buffalo.edu/adserv.html

NHphonebook.com - Find a New Hampshire Zip Code

https://www.nhphonebook.com/zipcodes.html

State of New Jersey Zip Codes

https://www.state.nj.us/infobank/njzips.htm

Area codes are now easy to find with the Telephone Area Code Finder by MMIWORLD! Search for all area codes by state or province or in numerical order!

https://www.mmiworld.com/telephone.htm