EarthWorks Geospatial Catalog

Telephone Area Code Boundaries U.S.A. 2009

Description
This polygon file represents the telephone area codes for the United States. They are also known as Numbering Plan Areas (NPA). The Numbering Plan Areas reflect current and accurate boundary changes both where new NPAs "split" from existing NPAs and where new NPAs "overlay" existing NPAs.
Publisher
Environmental Systems Research Institute (Redlands, Calif.)
Year
2009
Held by
Tufts
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