The 640 area code is a telephone area code serving the central and southern parts of New Jersey. To start a free reverse phone lookup, simply enter the full 10-digit number (including the 640 area code) below and access available caller information such as name, address, and more.
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Phone numbers with the 640 area code prefix originate from the central and southern parts of New Jersey. This numbering plan area, in conjunction with area code 609, constitutes the largest numbering plan area in New Jersey in terms of geographic coverage.
Area codes 609 and 640 are telephone overlay area codes serving the same geographic region. Area code 609 was introduced in 1956, and 640 was created as an additional area code for the area on September 17, 2018. With the implementation of the 640 overlay, ten-digit dialing became mandatory for all calls in the region as of August 18, 2018.
Area code 640 is a General Purpose Code which was placed in service on January 1, 1947.
Our reverse phone lookup will analyze the three-digit prefix of any 640 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, New Jersey geographic region, and local calling area associated with the phone number.
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