---
title: "jposta"
description: "A library for converting Japanese postal codes into addresses."
pagination: false
---

{/* Generated from content/. Edit the catalog, not this page. */}

<PurposeNote title="Good for">Helping users fill Japanese address forms from a postal code.</PurposeNote>

## What it does

A library for converting Japanese postal codes into addresses.

## When it fits

Helping users fill Japanese address forms from a postal code.

## Other options in this category

<div data-pagefind-ignore>

- [nmea.js](/maps/nmea-js) — Interpreting GPS and other navigation-device data in JavaScript.
- [React Google Maps](/maps/react-google-maps) — Integrating Google maps, markers, and location interactions into React.
- [React Leaflet](/maps/react-leaflet) — Building interactive maps with Leaflet layers and plugins.
- [react-map-gl](/maps/react-map-gl) — Building interactive map interfaces with controlled React state.
- [react-openlayers](/maps/react-openlayers) — Adding interactive maps backed by OpenLayers capabilities.

</div>

## Source

[Project source for jposta ↗](https://github.com/nickichi/jposta)

Editorial overview reviewed on October 24, 2026. Follow the source for current setup, compatibility, and licensing.

[Show locations on a map →](/tasks/show-locations-on-a-map)

[All maps &amp; location options →](/maps)