The vocabulary of the Street Address Parser API

The 10 fields and concepts you'll meet in the response — defined in plain English, each with a real example value.

10 terms
General10

Street Type

The suffix indicating the type of road (Street, Avenue, Boulevard, etc.).

Directional

Compass directions in addresses (N, S, E, W, NE, NW, SE, SW).

Unit Designator

Identifier for a specific unit within a building (Apt, Suite, Unit, #).

ZIP Code

Zone Improvement Plan code - US postal code system with 5 or 9 digits.

ZIP+4

Extended ZIP code with additional 4 digits for more precise delivery location.

CASS

Coding Accuracy Support System - USPS certification program for address software.

Address Parsing

Breaking a full address string into its component parts (number, street, city, etc.).

Normalization

Converting addresses to a standard format with consistent abbreviations and formatting.

Geocoding

Converting an address to geographic coordinates (latitude and longitude).

PO Box

Post Office Box - a numbered compartment for mail at a post office.

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