A summary of the Area Code Boundary specification.
1.0 Introduction
The Area Code datasets are reported once per year by the United States Census. The data reflect the area codes in the defined search region. The dataset is available to download through the Urban SDK Data Hub for the years 2015 - 2020.
Area Code Definition
An area code historically stems from a larger system, known as the North American Numbering Plan (NANP). This plan is utilized by many countries to organize telephone calls.
Area codes are most often three-digit numbers indicating the broadband area that the phone receiving the call is based in.
Area Code Parameters: Census.gov
2.0 Data Specification
The following table is the format in which downloaded Area Code Boundary data will be provided:
| Field |
Type |
Description |
|
|
String |
The GIS information required for the computer to read the mapping file |
|
|
Integer |
The unique identifier for the Area Code |
|
|
Float |
Area in square miles of the boundary |
|
|
String |
Name of the Area Code |
|
|
String |
Name of the state the Area Code resides in |
|
|
String |
Name of the county that the Area Code resides in |