Open APIs

Löydä kaikki pääkaupunkiseudun avoimet rajapinnat täältä!

• Helsinki sustainable development indicators

  The Helsinki sustainable development indicators statistical database contains the indicators of the Voluntary Local Review (VLR) of sustainable development in Helsinki. The...

  • JSON
  • PX

• Materials of Helsinki City Archives

  The Sinetti archive information system operated by the City of Helsinki Archives provides collection data from archived documents of the City of Helsinki. The document...

  • JSON

• Nordstat: statistics on largest Nordic cities

  The Nordstat database, implemented in cooperation between the Nordic countries, contains basic statistics as time series on the largest cities and urban regions in the Nordic...

  • PXWEB
  • JSON

• Helsinki: Health and welfare statistics

  The welfare statistics database contains information on the well-being of children and young, persons of working age and elderly people in Helsinki. The statistics contain...

  • PXWEB
  • JSON

• Address API of Uusimaa

  You can use the address interface of Uusimaa to search for official addresses and their coordinates for the entire Uusimaa region. The interface provides the coordinates, postal...

  • JSON
  • XML

• School history database of Helsinki

  NOTE (1/2026): Koulurekisteri (the school register) service has been moved to a new website at https://historia.hel.fi/fi/koulurekisteri. Therefore, the interface is no...

  • JSON

• Linked Events Helsinki API

  You can use Helsinki’s Linked Events API to retrieve event data of several City of Helsinki divisions and the Helmet library service in a uniform format. The geographic data is...

  • JSON

• Helsinki region statistics API

  The regional statistics interface enables the computerised retrieval of statistical data in Greater Helsinki’s Aluesarjat...

  • JSON
  • PXWEB

• Helsinki Metropolitan Area service register REST API

  Helsinki Metropolitan Area (Helsinki, Espoo, Vantaa and Kauniainen) service register REST API. The interface offers possibilities to make queries and use the data in the...

  • XML
  • JSON

• The Issue Reporting API of the City of Helsinki

  Interface (API) to the City of Helsinki feedback system. Feedback from all City departments is published through the API, and can be used for example by businesses and other...

  • XML
  • JSON

• Metadata of HRI datasets

  The dataset includes the metadata of all open data found in the Helsinki Region Infoshare (HRI) online service for open data. The metadata can be read through the CKAN data...

  • JSON

• Helsinki Channel open data

  Helsinki Channel’s (helsinkikanava.fi) videos and metadata are available through an open programming interface. The Helsinki...

  • JSON