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US State Code Regex Pattern

Matches valid US state and DC two-letter abbreviations. Complete list of all 50 states plus District of Columbia.

🪪
Identity & Documents
Intermediate
Difficulty
Universal
Language
none
Flags
// Regular Expression
/^(A[KLRZ]|C[AOT]|D[CE]|FL|GA|HI|I[ADLN]|K[SY]|LA|M[ADEINOST]|N[CDEHJMVY]|O[HKR]|PA|RI|S[CD]|T[NX]|UT|V[AIT]|W[AIVY])$/

Live Regex Tester

Pattern Breakdown

^(A[KLRZ]|C[AOT]|D[CE]|FL|GA|HI|I[ADLN]|K[SY]|LA|M[ADEINOST]|N[CDEHJMVY]|O[HKR]|PA|RI|S[CD]|T[NX]|UT|V[AIT]|W[AIVY])$
Character class [ ]
Group ( )
Quantifier { }
Anchor ^ $
Repetition * + ?
Escape \
Alternation |
Any char .

Code Examples

JavaScript

const regex = /^(A[KLRZ]|C[AOT]|D[CE]|FL|GA|HI|I[ADLN]|K[SY]|LA|M[ADEINOST]|N[CDEHJMVY]|O[HKR]|PA|RI|S[CD]|T[NX]|UT|V[AIT]|W[AIVY])$/;
const test = "CA";
console.log(regex.test(test)); // true

// Extract matches
const matches = test.match(regex);
console.log(matches);

Python

import re

pattern = r'^(A[KLRZ]|C[AOT]|D[CE]|FL|GA|HI|I[ADLN]|K[SY]|LA|M[ADEINOST]|N[CDEHJMVY]|O[HKR]|PA|RI|S[CD]|T[NX]|UT|V[AIT]|W[AIVY])$'
test = "CA"
match = re.search(pattern, test)
print(match)  # Found!

Go

package main

import (
    "fmt"
    "regexp"
)

func main() {
    re := regexp.MustCompile(`^(A[KLRZ]|C[AOT]|D[CE]|FL|GA|HI|I[ADLN]|K[SY]|LA|M[ADEINOST]|N[CDEHJMVY]|O[HKR]|PA|RI|S[CD]|T[NX]|UT|V[AIT]|W[AIVY])$`)
    fmt.Println(re.MatchString("CA")) // true
}

Common Use Cases

Address formsstate selection validationdata cleaning

Match Examples

InputResult
CAMatch
XXNo Match

About the US State Code Regex

Matches valid US state and DC two-letter abbreviations. Complete list of all 50 states plus District of Columbia.

Regular expressions (regex) are powerful pattern matching tools used across virtually all programming languages. The us state code pattern is classified as intermediate difficulty in the identity & documents category. It works in all major programming languages.

When using this regex, always consider edge cases and test thoroughly with real-world data. Use the interactive tester above to validate the pattern against your specific inputs before deploying to production.

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Frequently Asked Questions

What is the US State Code regex pattern?

Matches valid US state and DC two-letter abbreviations. Complete list of all 50 states plus District of Columbia.

How do I use the US State Code regex?

Use the pattern /^(A[KLRZ]|C[AOT]|D[CE]|FL|GA|HI|I[ADLN]|K[SY]|LA|M[ADEINOST]|N[CDEHJMVY]|O[HKR]|PA|RI|S[CD]|T[NX]|UT|V[AIT]|W[AIVY])$/ in your code. In JavaScript: new RegExp('^(A[KLRZ]|C[AOT]|D[CE]|FL|GA|HI|I[ADLN]|K[SY]|LA|M[ADEINOST]|N[CDEHJMVY]|O[HKR]|PA|RI|S[CD]|T[NX]|UT|V[AIT]|W[AIVY])$', ''). Test it above with your own input.

What does this US State Code regex match?

This pattern matches: "CA". It does NOT match: "XX". Address forms, state selection validation, data cleaning.

Is the US State Code regex beginner-friendly?

This pattern is rated Intermediate. It uses some advanced features like character classes and quantifiers.

What languages support the US State Code regex?

This pattern works in all major programming languages including JavaScript, Python, Java, C#, Go, Ruby, PHP, and more. Syntax may vary slightly between regex engines.

Can I modify the US State Code regex for my use case?

Yes! Use the interactive tester above to modify the pattern and test with your own data. Common modifications include making it case-insensitive (add 'i' flag), matching globally (add 'g' flag), or adjusting character classes.

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