ZIP Code API for Global Address Validation | zipcodestack.com

Free & Reliable

Zip Code API - Free Postal Code Search & Validation

A completely free Zip Code REST API and the best way to get accurate zip code data for your application.

VAT lookup and validation API

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Europe-based

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Access The API In Just Three Easy Steps

Zip codes are handled differently in almost every country. We provide an efficient data layer to help you validate and normalize zip codes.

Make Request

Step 1

Get Your API Key

With a few clicks, register your new API key. We provide a generous free tier to get you started and cover basic use cases.

Make Request

Step 2

Make A Request

Our API suite provides you with plenty of useful documentation and use case examples to provide you with the best possible experience.

Receive Data

Step 3

Receive Postal Code Data

Receive postal code data in real-time through our Zip code REST-API. All of our data are updated regularly.

Available Data Endpoints

Oour zip code API provides multiple endpoints to allow global searches and postal code related calculations.

GET /api/v1/search

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// search for zip codes 
curl -X GET \
    --url "https://api.zipcodestack.com/v1/search?codes=20095&country=de" \
    --header "apikey: YOUR-APIKEY"

Search postal codes

Search for postal codes globally or for a specific country.

Documentation

GET /api/v1/distance

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// calculate distance between two zip codes 
curl -X GET \
    --url "https://api.zipcodestack.com/v1/distance?code=99501&compare=90210" \
    --header "apikey: YOUR-APIKEY"

Distance calculation

Calculates the distance between one and other postalcodes.

Documentation

"We had a few special requirements, and the zipcodestack.com team was super responsive & helpful, as they replied to all our questions and helped us get started within just a few hours. With the help of their ZIP code API, we can now easily handle our global address validation and shipping calculations."

Armin Daryabegi CTO

Frequently Asked Questions

Everything You Need to Know – Answers to Your Most Common Questions

4.9 Out Of 5 Based On 86 Reviews

Start Using Our ZIP Code API For Free Today!

The Perfect Tool To Handle Your Address Validation Needs. Our API Helps You With Current And Accurate Postal Code Data. Stop Worrying About Uptime & Outdated Data.

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