United States Complete Address Format Guide
US ZIP Codes use five digits; an optional four-digit ZIP+4 suffix narrows delivery to a smaller segment. The first digits identify broad regions, and city/state/ZIP values should be kept consistent. The North American Numbering Plan uses a three-digit area code, three-digit exchange, and four-digit subscriber number. US and Canada share country code +1. Most forms use given name followed by family name. Middle names or initials are common but optional, and compound or hyphenated surnames should not be split automatically.
Standard format
Olivia Johnson / James Smith โ street โ NNNNN or NNNNN-NNNN
Example
10001 ยท +1 212-555-0147
Implementation and validation notes
US ZIP Codes use five digits; an optional four-digit ZIP+4 suffix narrows delivery to a smaller segment. The first digits identify broad regions, and city/state/ZIP values should be kept consistent. The North American Numbering Plan uses a three-digit area code, three-digit exchange, and four-digit subscriber number. US and Canada share country code +1. Most forms use given name followed by family name. Middle names or initials are common but optional, and compound or hyphenated surnames should not be split automatically.
Validate required state, character set, length, and syntax on the client, then repeat validation on the server. Preserve the original input and normalize into a separate field; never truncate local scripts, compound names, or leading zeroes to fit a single Western assumption.
This guide describes common formats rather than an official registry and cannot enumerate every exception. Generated output is for testing only, not delivery, calling, identity verification, or real account activity.
Postal code
NNNNN or NNNNN-NNNN
US ZIP Codes use five digits; an optional four-digit ZIP+4 suffix narrows delivery to a smaller segment. The first digits identify broad regions, and city/state/ZIP values should be kept consistent.
Phone
+1 NPA-NXX-XXXX
The North American Numbering Plan uses a three-digit area code, three-digit exchange, and four-digit subscriber number. US and Canada share country code +1.
Names
Olivia Johnson / James Smith
Most forms use given name followed by family name. Middle names or initials are common but optional, and compound or hyphenated surnames should not be split automatically.
Related resources
Frequently asked questions
What is the standard United States address format?
A common representation is Olivia Johnson / James Smith โ street โ NNNNN or NNNNN-NNNN, for example 10001 ยท +1 212-555-0147. US ZIP Codes use five digits; an optional four-digit ZIP+4 suffix narrows delivery to a smaller segment. The first digits identify broad regions, and city/state/ZIP values should be kept consistent. The North American Numbering Plan uses a three-digit area code, three-digit exchange, and four-digit subscriber number. US and Canada share country code +1. Most forms use given name followed by family name. Middle names or initials are common but optional, and compound or hyphenated surnames should not be split automatically.
How should United States address test data be stored?
Store the original value as a string so leading zeroes, spaces, hyphens, accents, and local scripts are preserved. Use a separate normalized field for search.
Does correct formatting prove the data is real?
No. Syntax validation cannot prove an address is deliverable, a number is assigned, or a name belongs to a real person.