From this page you can quickly and easily search Finnish postcodes by city, street, or postal area. The search is designed for everyday use – for both individuals and businesses.
How does the postcode search work?
To find a postcode:
- enter the city, street, or postal area name
- select the right match from the results
- check that the address matches your needs
The search helps find the correct postcode even when you don’t know the exact street name.
When to use the postcode search?
The postcode search is useful when you:
- send letters or parcels
- fill in web forms or orders
- register a company or address
- move to a new area
- check an existing address
The right postcode helps avoid delays and incorrect deliveries.
What can the search find?
The search lets you find:
- Finnish cities’ and localities’ postcodes
- areas grouped by municipality
- different districts and zones in larger cities
In larger cities one area may have several postcodes – the search helps distinguish them.
What if the search returns no results?
If the search doesn’t find a match:
- check the spelling
- try searching by a broader area
- choose the municipality first and browse from there
If you notice missing or incorrect information, you can report it via the Contact page.
Does the search always show up‑to‑date information?
Postinumerot.fi aims to keep information as current as possible. However:
- new residential areas
- address changes
- administrative boundary updates
may appear with a delay. We recommend always checking the postcode before sending important mail.
Is the search suitable for businesses?
Yes. The postcode search is useful for:
- online shops and logistics
- customer service and data entry
- checking documents and billing addresses
Many address errors are caused by wrong or missing postcodes.
Alternative way to search
If you prefer to browse:
- open the Municipalities page
- select the right municipality
- search for a city or locality there
This works well when you’re not sure of the exact place name. Search on the home page.
Tip
Use the postcode search always together with a precise address – street, house number, and city with the correct postcode ensure fast and correct delivery.