Supported Geocode Datasets

The following table shows the geocoding levels available.

Street Geocode Datasets

Street Geocode datasets contain the spatial data necessary to perform address standardization and geocoding. .

These Geocode datasets use proprietary files called GSD files. For ZIP Code centroid matching, the file us.Z9 contains all the centroid info for all states and normally has a z9 extension.

• TomTom Streets — This Geocode dataset provides street segment data by TomTom, a third-party provider of spatial data, and postal data from the U.S. Postal Service.

Each Geocode dataset has an optional Statewide Intersections Index. The Statewide Intersection Index is designed to enable fast intersection identification on a statewide basis. For example, the Statewide Intersection Index will allow the Geocode dataset search for "1st && Main St, CO" and return a list of possible matches in Colorado more quickly than searching the entire Geocode dataset for each instance of the intersection.

Point Geocode Datasets

Point Geocode datasets contain data for locating the center of a parcel. These Geocode datasets provides enhanced geocoding accuracy for internet mapping, property and casualty insurance, telecommunications, utilities, and others.

• Centrus Points — This Geocode dataset contains the data necessary to locate the center of a parcel or building. It does not contain Assessor's Parcel Number (APN) or elevation data.
• Centrus TomTom Points — The data in this Geocode dataset is provided by TomTom, a third-party provider of spatial data.

Reverse Geocode Dataset

The Reverse Geocode dataset contains the data you need to convert a latitude/longitude location to an address.

This Geocode dataset is optional, but is required for reverse geocoding. This Geocode dataset is also separately licensed.