This data set of US
Carrier Routes was created using raw data provided by the United States
Postal Service (USPS) and processed using Microsoft Visual FoxPro and MapInfo. The polygons
were created by converting points to polygons. The point information
provided by the USPS was ZIP+4 data which included latitude and
longitude. Using a convex hull algorithm, "detailed" polygons were
able to be created for each carrier route. The GIS data was created to
be used for a Internet web mapping application as well as other GIS
marketing projects.
Coverage (United
States) Format
(MapInfo MID/MIF)
Projection (Geographic - Lat/Long)
Datum (NAD83)
Vintage (2004)
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