Canadian Postal Code Regex Pattern

Live Regex Tester

Pattern Breakdown

Code Examples

const regex = /^[A-Z]\d[A-Z]\s?\d[A-Z]\d$/i;
const test = "K1A 0B1";
console.log(regex.test(test)); // true

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

import re

pattern = r'^[A-Z]\d[A-Z]\s?\d[A-Z]\d$'
test = "K1A 0B1"
match = re.search(pattern, test, re.IGNORECASE)
print(match)  # Found!

package main

import (
    "fmt"
    "regexp"
)

func main() {
    re := regexp.MustCompile(`^[A-Z]\d[A-Z]\s?\d[A-Z]\d$`)
    fmt.Println(re.MatchString("K1A 0B1")) // true
}

Common Use Cases

Match Examples

About the Canadian Postal Code Regex

Validates Canadian postal codes in A1A 1A1 format alternating letters and digits with optional space.

Regular expressions (regex) are powerful pattern matching tools used across virtually all programming languages. The canadian postal code pattern is classified as beginner 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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