Postal Code

Validate the structural format of an Iranian postal code (کد پستی): 10 digits, not starting with zero, and not a single digit repeated 10 times — after normalizing Persian/Arabic-Indic digits.

Last updated January 1, 1980

Overview

Installation

$ pnpm dlx shadcn@latest add @persianlabsui/postal-code

Usage

import { isValidPostalCode } from "@/lib/postal-code"
 
isValidPostalCode("1985813151") // true
isValidPostalCode("0000000000") // false

API Reference

postal-code

Prop	Type	Default	Description
isValidPostalCode(value)	string \| null \| undefined → boolean	—	Normalizes Persian/Arabic-Indic digits, then validates the 10-digit Iranian postal code (کد پستی) format — a structural check only, since Iran Post does not publish a checksum algorithm.

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