Open APIs

Löydä kaikki pääkaupunkiseudun avoimet rajapinnat täältä!

• Aluesarjat statistical database data as spatial data

  Aluesarjat - Key figures enables the use of statistical data by sub-region of Helsinki using the open WFS interface. The statistics are based on the data in the Helsinki region...

  • WFS

• 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 for children and youth

  The welfare statistics database contains information on the well-being of children and young people in Helsinki. The statistics contain information on, for example, family...

  • 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

• Historical guide maps of the City of Helsinki

  Historical guide maps of Helsinki from 1940, 1952, 1962 and 1999. The guide maps include the following Information: place names, streets, roads and railway connections, public...

  • TIFF
  • WMS

• News on Helsinki’s hel.fi website

  News on the City of Helsinki’s hel.fi website are available as open data via a RSS feed. The Helsinki City Executive Office’s Communications is responsible for the contents on...

  • XML

• Resource reservation system for City of Espoo

  An API for making resource reservations, such as booking a practice room or a meeting space. API location: https://api.hel.fi/respa/v1/ Reservation booking system or Respa is a...

  • JSON

• School history database of Helsinki

  Koulurekisteri is the school history database operated by the Helsinki City Archives. It is the most comprehensive listing available of the history of all schools in the City of...

  • JSON

• Resource reservation system for City of Helsinki

  An API for making resource reservations, such as booking a practice room or a meeting space API location: https://api.hel.fi/respa/v1/ Reservation booking system or Respa is a...

  • 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 (in Finnish) statistical database in different file...

  • 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

  NOTE: The API is currently not in use due to renewal of the information system. The renewed API is scheduled to be published in 2024. An API to the City of Helsinki digital...

  • XML
  • JSON

• Open decision API of Helsinki

  Note (12/2023): OpenAhjo is not in production, so the up-to-dateness or availability of its data cannot be guaranteed. You can search for public decision data for the City of...

  • XML
  • JSON

• Map of Helsinki and its areas from 1909

  Map of the City of Helsinki and its areas from 1909 prepared by the City of Helsinki construction office. The map covers the entire urban area at the time and the city-owned...

  • TIFF
  • WMS

• 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 metropolitan area Service Map APIs

  The Service Map is an open information channel on the service points and services offered by the cities of Helsinki, Espoo, Vantaa and Kauniainen. The Service Map helps the...

  • JSON
  • WFS

• Helsinki Channel open data

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

  • JSON