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USA: ZIP+4 Codes & Address Data

Uli Bethke

Uli Bethke


United States ZIP codes are five numerical digits long. ZIP+4 codes, also known as add-on or plus-four codes, include four additional digits that identify a geographic segment within a ZIP code delivery area.

The first digit in a ZIP code represents a defined group of U.S. states. The second and third digits represent a region in that group, such as a large city.

To send mail, only the first five digits of the ZIP code are required. Including the full ZIP+4 code can expedite delivery times due to the specific geographic detail communicated.

While modern marketers know the value in using the ZIP code for demographic research, businesses noticed early that the ZIP code could provide an alternative way for them to determine market groups. The 1967 Annual Report even made note on the unforeseen business uses of the ZIP.

The below figure demonstrates the digits in the ZIP code.


ZIP Codes are not just numbers that identify a location. They have become social identifiers – giving information on the demographics of the people of a certain region. Companies use Zip Codes as important data structures that give them a visual representation of their audience. With this information, companies are making major marketing decisions including the closing or opening of stores, launching new products or services and pivoting sales data into regions. ZIP Codes are POWERFUL and as such, it is necessary for any business to have VALID and ACCURATE ZIP codes.

Colum Name Data Type Description
ZIP-4 NUMBER A USA postal code is a five digit number that forms part of a postal address in the USA. ZIP+4 codes, also known as add-on or plus-four codes, include four additional digits that identify a geographic segment within a ZIP code delivery area
NUMBER NUMBER The number field represents the particular area such as house number, office number, building number.
STREET_ADDRESS TEXT This is the name of the street which derived from STREET_NAME + TYPE (e.g SQUAW VALLEY DR)
CITY_NAME TEXT Name of the city
STATE TEXT This is the province or state name within USA
LATITUDE NUMBER latitude of the internal point
LONGITUDE NUMBER longitude of the internal point
STREET_NAME TEXT Name of the street without its type (e.g SQUAW VALLEY)
TYPE TEXT Street types such as Avenue (Ave), Boulevard (Blvd), Drive(DR). There are 186 types present in the USA.
DIRECTION TEXT This is derived from the street name, such as the street location in the city. The values are E,W,N,S, SE,SW, NE, NW

Sample use cases

Profiles of Zip Codes with and without Orders

Are the zip codes with orders different from the zip codes without orders?

Classifying and Comparing Zip Codes

Augment zip codes with census information. Wealthier zip codes place orders and less wealthy zip codes do not place orders. Extending this observation leads to the question: Among zip codes that place orders, do wealthier ones place more orders than less wealthy ones?

Wealthiest Zip Code in a State?

Augment zip codes with census information, administrative boundaries and geographic hierarchies (also available from Sonra). Wealth is spread unevenly across the United States. Relative wealth is often more important than absolute wealth, although actual income levels may differ considerably. This inspires a question: What is the wealthiest zip code in each state?


Usage 1

Find an address with known ZIP code.

Usage 2

Find out the number of ZIP codes for state PA and city ‘BRIDGEVILLE’

Usage 3

Find out all the ZIP codes for state PA, city ‘BRIDGEVILLE’ and street ’VANADIUM RD’

Usage 4

Find out the Geocoding for the address 12400,FALLEN LEAF DR, DALLAS, TX

Usage 5

Find out the ZIP Code for the address 2099,WENDOVER ST, PITTSBURGH, PA

Usage 6

Find out the address by geocoding