Postal Code Services

Postal Code Services are free files that provide up-to-date information about postal codes and addresses in Finnish municipalities and postal code areas. You can use them to keep your company’s address data current and to make it easier to manage mailing lists or address registers. The files don’t include street names or map data, but they offer a reliable base for tasks like updating your customer database.

Files to be downloaded

  • The Postal Code Data File contains Finnish postal codes that are valid as addresses, along with their basic information.

  • The Basic Address File contains all Finnish (excluding Åland Islands) postal codes that are valid as addresses, streets and municipalities. If a street is divided into several postal codes, the correct postal code is indicated by building numbers.

  • Information about changes in postal codes over the previous month.

Download the file of your choice

Read the service description and terms of use. The description contains file names and record descriptions, for instance. When transferring the files or service documents, the service description and terms of use must always be delivered, too.

Frequently asked questions