Open APIs

Löydä kaikki pääkaupunkiseudun avoimet rajapinnat täältä!

• Address book of Vantaa

  The address list contains the official addresses and their location coordinates for buildings, unbuilt construction sites and parks in the area of Vantaa. The dataset is updated...

  • TXT
  • WFS
  • WMS

• Buildings in Espoo

  This dataset provides information on buildings as polygons in Espoo. Weekly updating, position-accurate buildings are available in the WMS and WFS interfaces. In the data...

  • WMS
  • WFS

• 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

• Database of addresses of Helsinki

  The database of addresses of Helsinki maintains information about the addresses and place names of properties and plan units located in the area of Helsinki. The street names...

  • WMS
  • WFS

• 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

• Stara Snowplow API

  Note (10/2024): Due to updates, the API is currently not operational. In 2012, the City of Helsinki’s construction service Stara introduced an electronic production control...

  • XML

• Geoenergy map of Espoo

  The geoenergy map portrays the suitability of soil and bedrock for geoenergy production. The map is based on soil maps of the City of Espoo, soil and bedrock data of the...

  • WMS
  • GEOTIFF

• Lot reserve in the Helsinki Metropolitan Area (SeutuRAMAVA)

  SeutuRAMAVA contains data on lot reserve based on the reserve of legally valid city plans in the Helsinki metropolitan area. The data has been calculated for the data by...

  • WFS
  • SHP
  • TAB
  • KML
  • XLSX
  • CSV

• Building information grid of the Helsinki metropolitan area

  The building information grid contains grid-based data on the number, floor area and purpose of use of buildings as well as area density in the Helsinki metropolitan area. Data...

  • WFS
  • WMS
  • SHP
  • TAB
  • KML

• Population grid of Helsinki metropolitan area

  The population grid contains grid-based data on the population total, age distribution and occupancy rate of the Helsinki metropolitan area. The material covers the years...

  • WFS
  • WMS
  • SHP
  • TAB
  • KML

• 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

• Traffic data from Helsinki

  Traffic data from Helsinki contains data about motor traffic: traffic volume, speed, amounts of different types of vehicles). The data consists of three different datasets in...

  • JSON
  • CSV
  • WMS
  • WFS

• Telephone numbers for City of Helsinki departments

  The numerot.hel.fi service provides an Internet interface for browsing and searching for telephone numbers of the City of Helsinki’s departments and municipal enterprises. The...

  • XML

• Helsinki region map

  The regional map is general map dataset compiled from the data of the 14 municipalities in the Helsinki region. The map is divided into sections describing land use (built-up...

  • WMS
  • WFS
  • TAB

• 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 environmental statistics

  Helsinki Environmental Statistics is an online statistics service collecting the essential variables describing the state of the environment and burdens on the environment in...

  • PXWEB
  • JSON

• HSL Journey Planner API

  The Journey Planner (reittiopas.fi) APIs offer data regarding routing, geocoding, map data and vehicle locations through several APIs. Routing API, Itinerary- and...

  • XML

• 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

• Helmet-libraries’ catalog

  Data from the HelMet libraries’ catalogue in a machine-readable format. The data source contains the descriptions of approximately 680,000 books, records, sheet music...

  • JSON