95 Countries · 887,146 Codes · Free API
Postal Code Lookup
Which city is that ZIP code in? What is the postcode for this town? Find any postal code in 95 countries, in one second.
Pick the country, enter any ZIP, postcode or postal code, and get the city, region and coordinates.
Why Use PostalCodeCheck?
One lookup for every country's system: ZIP, postcode, PLZ, PIN and more
95 Countries
887,146 postal codes with the city, region and coordinates for each. Browse all countries.
Code to City, City to Code
Look up a code to find the place, or open a city page to see every code it uses.
Built for Address Forms
Made by the team behind AreaCodeCheck and IbanCodeCheck: validate the phone, the account, and the address.
Free API Included
Postal code lookups as JSON via our free API - no key required.
Frequently Asked Questions
Postal codes, ZIP codes and postcodes explained
How do I find which city a postal code belongs to?
Select the country above, enter the code, and you get the city or locality, the region, and the coordinates instantly. Every code also has its own page with nearby codes and the other places it covers.
Is a ZIP code the same as a postal code?
Yes. "ZIP code" is the United States term, "postcode" is used in the UK and Australia, "PLZ" in Germany, "PIN code" in India. They are all postal codes: short codes that route mail to a delivery area. Read the full guide.
Why does one postal code cover several places?
In many countries a single code serves multiple villages or districts, and in dense cities one city uses hundreds of codes. Our code pages list every place a code covers, and our city pages list every code a city uses.
Where does the data come from?
From the GeoNames postal dataset (CC BY 4.0), one of the most complete open postal databases available, refreshed monthly on our servers. Details on the about page.
Is this free?
Yes, completely free with no registration, including the JSON API for developers.