United States Address Format Guide: Structure & Examples

Updated: July 9, 2025
Table of Contents

United States Address Format Guide

In this comprehensive guide, we’ll explore the standard address format used in United States. Whether you’re shipping packages, sending mail, or validating addresses for your business, understanding the proper address structure is essential for successful deliveries. We’ll cover the basic elements, provide examples, and explain how GeoPostcodes can help with address validation.

United States - Address Format

An address format in United States contains the following elements:

  1. Recipient’s name
  2. Business or department name (if applicable)
  3. House number and street name
  4. City Name, State Code, ZIP Code (5 digits)
  5. Country – UNITED STATES (in all caps)

John Smith
117 Richardson St SE
Atlanta GA 30312
UNITED STATES

United States Address Format Examples

Example 1:

John Smith
1518 Hellings Ave
Richmond CA 94801
UNITED STATES

Example 2:

The White House
1600 Pennsylvania Ave NW
Washington DC 20500
UNITED STATES

Postal and Country Information for United States

Country/territory name United States
ISO codes ISO 3166-1 alpha-2: US
ISO 3166-1 alpha-3: USA
ISO 3166-1 numeric-1: 840
Administrative area count 54
Administration area names and abbreviations
  • Washington, D.C.
  • Alabama
  • Alaska
  • Arizona
  • Arkansas
  • California
  • Colorado
  • Connecticut
  • Delaware
  • Florida
  • Georgia
  • Hawaii
  • Idaho
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Kentucky
  • Louisiana
  • Maine
  • Maryland
  • Massachusetts
  • Michigan
  • Minnesota
  • Mississippi
  • Missouri
  • Montana
  • Nebraska
  • Nevada
  • New Hampshire
  • New Jersey
  • New Mexico
  • New York
  • North Carolina
  • North Dakota
  • Ohio
  • Oklahoma
  • Oregon
  • Pennsylvania
  • Rhode Island
  • South Carolina
  • South Dakota
  • Tennessee
  • Texas
  • Utah
  • Vermont
  • Virginia
  • Washington
  • West Virginia
  • Wisconsin
  • Wyoming
  • DC
  • AL
  • AK
  • AZ
  • AR
  • CA
  • CO
  • CT
  • DE
  • FL
  • GA
  • HI
  • ID
  • IL
  • IN
  • IA
  • KS
  • KY
  • LA
  • ME
  • MD
  • MA
  • MI
  • MN
  • MS
  • MO
  • MT
  • NE
  • NV
  • NH
  • NJ
  • NM
  • NY
  • NC
  • ND
  • OH
  • OK
  • OR
  • PA
  • RI
  • SC
  • SD
  • TN
  • TX
  • UT
  • VT
  • VA
  • WA
  • WV
  • WI
  • WY
Term to describe postal codes ZIP code
Postal code format 99999
Population 321 340 178
Total land area 10 423 449km²

How to Validate Addresses for United States Using GeoPostcodes Database

GeoPostcodes offers comprehensive address validation database to validate United States addresses. Our database ensures addresses follow the correct format for United States, reducing delivery errors and improving efficiency.

Use GeoPostcodes:

  • Address Database to validate Street Names, Cities, State Codes and ZIP Codes in United States
  • Postal Database if you only need to validate Cities, State Codes and ZIP Codes in United States
  • Population Database if you would like to do urban/rural mapping or compute how many people live in United States segmented by ZIP code, city or administrative divisions

You can leverage GeoPostcodes data to validate addresses in United States using:

  • Street column to validate Street names
  • Post Town column to validate City names
  • ISO2 column to validate State codes
  • Postcode column to validate ZIP codes