Library
Current regex:
ZIP code regex Python
Python

Python

ZIP code regex Python
ZIP code
XML regex Python
XML
UUID regex Python
UUID
URL regex Python
URL
Street address regex Python
Street address
SSN regex Python
SSN
Phone number regex Python
Phone number
Password regex Python
Password
Numbers only regex (digits only) Python
Numbers only (digits only)
Regex match words Python
Words match
Mac address regex Python
Mac address
IP address regex Python
IP address
HTML regex Python
HTML
GUID regex Python
GUID
Email regex Python
Email
Date regex Python
Date
ZIP code regex Python

ZIP code

ZIP code (US postal code) regular expression can be used to verify if a given string contains a valid ZIP code or extract ZIP code from a string. Supports both 5-digit and 9-digit (ZIP+4) formats.

JavaScript
JavaScript
Python
Python
Java
Java
C#
C#
PHP
PHP

ZIP code regex

A regular expression to test a string against ZIP code format:

"^[0-9]{5}(?:-[0-9]{4})?$"

Test it!
/^[0-9]{5}(?:-[0-9]{4})?$/

True

False

Enter a text in the input above to see the result

Example code in Python:

import re

# Validate ZIP code
words_pattern = "^[0-9]{5}(?:-[0-9]{4})?$"
re.match(words_pattern, '80001') # Returns Match object
re.match(words_pattern, '80001-2222') # Returns Match object
re.match(words_pattern, '800010') # Returns None

# Extract ZIP code from a string
words_extract_pattern = "[0-9]{5}(?:-[0-9]{4})?"
re.findall(words_extract_pattern, 'My zip code is 80001') # returns ['80001']

Test it!

True

False

Enter a text in the input above to see the result

Test it!

True

False

Enter a text in the input above to see the result

Notes on ZIP code validation and extraction

This ZIP code regex has several limitations:

  • It only works for US ZIP codes. If you need to support other countries, you might need to have a separate regular expression for each one of them and execute it based on the country provided.
  • It can not guarantee that ZIP code actually exists. For instance, 99999 is a correct format, but this ZIP code does not exist.
  • The extraction method can generate false-positive extraction if a string contains multiple numbers.