A city to postal code finder is a free online tool that returns the approximate postal code for any city in the world. Enter the city name, pick its country, and get the central postcode from OpenStreetMap's free Nominatim geocoder, with click-to-copy and no signup.
Find the postal code
How do I find the postal code for a city?
Type the city name above, select its country, and click Find postal code. The tool geocodes the place with the free Nominatim (OpenStreetMap) service and returns the central postal code it has for that place. Click the code to copy it for your form, label or spreadsheet.
The result is approximate: it is the main postcode for the place, not a full list of every delivery-zone code. For shipping, always confirm with the exact street address.
Why does one city have multiple postal codes?
Postal services divide larger cities into delivery zones so mail routes stay efficient. Each zone gets its own code, roughly mapping to neighborhoods or delivery stations, which is why downtown and suburbs differ while small towns often share one. This finder returns the central code rather than every zone.
Small towns often share a single code, while major metros can have dozens plus special PO-box-only codes.
What is the difference between a ZIP code and a postal code?
ZIP code is the American name for the postal code system, introduced in 1963 (Zone Improvement Plan). Other countries use their own formats, like Canadian alphanumeric codes or UK postcodes. This finder covers cities in 70 countries worldwide using OpenStreetMap data.
For a code you already have, use the postal code lookup tool to see its city and coordinates.
How do I pick the right postal code when a city has many?
Use the code for the specific street address, not just the city: the right code follows the delivery route. For general "city" fields on forms, the central code usually validates, but shipping and tax calculations need the exact one.
When in doubt, look up the full address with the single postal code lookup tool to confirm the precise code.
FAQs
Is this city to postal code finder free?
Yes. Look up approximate postal codes for as many cities as you like with no account and no limits.
Why do I need to pick a country?
Many city names exist in more than one country (there is a Paris in France and one in Texas). The country pinpoints the right place so you get the correct postal code.
How accurate is the postal code result?
It is approximate: the tool returns the central postcode OpenStreetMap has for that place, not a full list of every delivery-zone code. Always verify with the exact street address for shipping.
What if my city is not found?
Check the spelling and country. Use the official spelling without abbreviations, for example Saint Louis instead of St. Louis, and try nearby larger cities for small towns.
Can I copy the postal code?
Yes. Click the code chip to copy it, or use the Copy button to get it for pasting into forms and spreadsheets.
Where does the data come from?
Nominatim, the free OpenStreetMap geocoding service. Searches run one at a time to respect its fair-use limits, and missing data is reported honestly, never invented.