Government
Parliament, municipal councils and government decisions. Motions, votes, parliamentary questions, debates and released documents. 15 sources, 3 international.
Votes for D66, 2025 general election: highest in Heemstede (29.5%), lowest in Urk (0.7%)
People who see judges as independent and clean government on the corruption index in EU countries: the higher one, the higher the other, mostly
Seats in the House: D66 is the largest part, 17% in oktober 2026
Datasets on data.overheid.nl by file format: most JSON (9,492 datasets), then Atom-feed and WMS (map service)
TED notices from Dutch contracting authorities: 22,755 notices in 2025, 68% more than in 2017
Official publications by gazette: most Gemeenteblad (municipal gazette) (560,560 publications), then Staatscourant (government gazette) and Waterschapsblad (water board gazette)
More from the data
All 25 examplesGifts declared by members: 434 per year in 2025, 52% more than in 2010
Votes per party in the 2025 House of Representatives election: most D66 (1,790,634 votes), then PVV (Partij voor de Vrijheid) and VVD
People who rate the independence of judges as good in the Netherlands: higher than in 21 of the 26 other EU countries
Young people under a child protection order (CBS figure, also in Waarstaatjegemeente): highest in Heerlen (2.4%), lowest in Bloemendaal (0.2%)
Datasets on data.overheid.nl by licence: CC BY 4.0 (attribution) is the largest part, 43% in October 2026
Council and committee meetings recorded in Open Raadsinformatie: 20,868 meetings per year in 2025, 3.8 times as much as in 2010
Dutch datasets on data.europa.eu by theme: most environment (4,271 datasets), then economy and finance and transport
Government letters to the House: 4,935 per year in 2025, 17% less than in 2009
Motions filed in the House: 4,440 per year in 2025, 70% more than in 2009
Oral questions at question time: 76 per year in 2025, 44% less than in 2009
Score on Transparency International's Corruption Perceptions Index in the Netherlands: higher than in 22 of the 26 other EU countries
Votes for the PVV, 2025 general election: highest in Rucphen (46.2%), lowest in Rozendaal (5.1%)
Sources
DANS Data Stations
DANS, the Dutch national centre for research data of KNAW and NWO, runs four Data Stations on Dataverse: Archaeology (176,448 datasets, 102,024 of them finds from Portable Antiquities of the Netherlands), Social Sciences and Humanities (8,162), Life Sciences (1,110) and Physical and Technical Sciences (898). Metadata are always public; files are open under a Creative Commons licence or restricted under the DANS Licence. DataCite counts 189,177 DOIs with the DANS prefix 10.17026 (16 October 2026).
data.europa.eu
The European data portal harvests the catalogues of the EU institutions and of all member states, including the Dutch one. On 15 October 2026 it held 1,752,057 datasets from 212 catalogues, 30,119 of them from the Netherlands. You can search via an API and via SPARQL.
data.overheid.nl
The register where Dutch governments list their open datasets. Broad, but descriptions vary in quality and many links are outdated.
Iv3, municipal budgets and accounts
Municipalities submit their budget, four quarterly reports and annual accounts to CBS in a fixed format: Information for third parties (Iv3). CBS publishes these figures unprocessed, per municipality, per policy area (from administration to youth care and waste) and per type of income or expense. There is one table per reporting year, also for provinces, water boards and joint arrangements.
Election results from the Electoral Council
The official results of all elections: House of Representatives, municipal council, provincial, water board, European Parliament and referendums. The results database goes back to 1848 and has a CSV per municipality for each election. For recent elections data.overheid.nl also has the count files (EML) with votes per polling station and per candidate.
National Archives of the Netherlands, finding aids and scans
The National Archives publish their finding aids as open data (CC0) via OAI-PMH, in EAD XML. On 16 October 2026 there were 7,411 finding aids (7,442 sets), each with the description of the archive and its inventory numbers. Where scans exist, each inventory number has a METS file linking to the images (public domain or CC0). Finding aids made by third parties (2.8 percent) are not open data.
open.overheid.nl (FOI documents)
Decisions on freedom of information requests and other released documents from central government and a growing number of municipalities and provinces.
Open Council Information
Agendas, motions, proposals and minutes from hundreds of municipalities in one searchable index, with an open search API.
Overheid.nl search service (SRU)
The search service behind overheid.nl: one SRU address for official announcements (Government Gazette, municipal gazettes, parliamentary papers …), local regulations of municipalities, provinces and water boards, the laws in force and the products and services of government bodies. On 16 October 2026 it held 6.7 million official publications, 344,109 local regulations, 148,592 law texts and 54,667 products. You get metadata in XML with a link to the document.
Dutch court rulings
An open API with all published rulings of Dutch courts: the full text in XML, with area of law, court, case number, date of ruling and a short summary. On 15 October 2026 the index held 3,778,296 ECLIs, of which 967,399 with the text of the ruling. New ones are added every day.
Central government budget (Rijksfinanciën open data)
The Ministry of Finance publishes the budget tables of all ministries and funds through an open API: expenditure, commitments and revenue per chapter, article and scheme, for the budget, the supplementary budgets and the annual report. Plus who received which grant or contribution (financial instruments, 2016–2025). The draft budget for 2027 was already there on 16 October 2026; the Ministry of Education alone accounts for 60.8 billion euros.
TED, European public procurement
TED (Tenders Electronic Daily) is the EU's procurement journal. Every public body buying above the European thresholds must report here: prior information, contract notice, award and modification, with CPV code, contracting authority and often the winner and value. The search API works without a key. In 2025 Dutch contracting authorities published 22,755 notices, over 183,000 since October 2016.
Dutch House of Representatives open data
Everything the House does, as an open API: motions and amendments, how each party voted, written questions, debates and committees, parliamentary papers, and the members themselves, with their side jobs, gifts and trips.
Waarstaatjegemeente.nl (municipal benchmark)
VNG's data hub on all Dutch municipalities. Figures from public sources and from municipalities themselves, in dashboards on social services, housing, energy, safety, finances and more. In the database you build your own tables and maps and export the figures. The publication calendar lists when each source gets new figures.
Wikidata
Wikidata is the free knowledge base behind Wikipedia: millions of items (people, places, buildings, organisations, artworks) with properties and sources, and above all with the IDs other registers use. For the Netherlands these include national monument numbers (P359), CBS municipality codes (P382) and KvK company IDs (P3220). This lets you join datasets that have no common key of their own. Everything is CC0. Note: robots.txt disallows bots on the SPARQL service and the APIs, so the Open Data Index does not query Wikidata itself.
In the harvested indexes
3,024 datasets in data.overheid.nl, the National Georegister and city portals with a subject belonging to this topic: Organisatie en beleid, Bestuur, Gemeenten, Internationaal.
Who publishes most
- DDrenthe644
- Centraal Bureau voor de Statistiek532
Rotterdam382- Rijkswaterstaat325
- ZHZuid-Holland154
Groningen (gemeente)109- OOverijssel98
- LVLeefbaarometer (ministerie van VRO)72
Utrecht (gemeente)67- NBNoord-Brabant65
- Ministerie van Binnenlandse Zaken en Koninkrijksrelaties58
- BZMinisterie van Buitenlandse Zaken47
Recently changed
- Verkiezingsuitslag Provinciale Staten 2007 BredaBreda (gemeente)
- Maatschappelijke indicatoren; jongeren, regionale indeling 2025; 2014-2024Centraal Bureau voor de Statistiek
- Verkiezingsuitslag Tweede Kamer 2002 BredaBreda (gemeente)
- Stadsarchief Breda Genealogie A2A BevolkingsregisterBreda (gemeente)
- Verkiezingsuitslag Gemeenteraad 2014 BredaBreda (gemeente)
- Stadsarchief Breda Genealogie A2A Staten en inventarissenBreda (gemeente)
- Stadsarchief Breda Genealogie A2A Burgerlijke stand huwelijkenBreda (gemeente)
- Verkiezingsuitslag Europees Parlement 2014 BredaBreda (gemeente)
- Stadsarchief Breda Genealogie A2A Notariele aktenBreda (gemeente)
- Wijken BredaBreda (gemeente)