The CBS postcode4 file contains statistical data by numerical part of a postal code (1234).
As of Q1 2021, data for the year 2020 have been added and the number of data for the years 2019 and 2018 has been expanded to include data on demographics, housing, energy, income, social security, proximity to facilities and density.
For more information, read:
https://www.cbs.nl/nl-nl/longread/diversen/2021/statistische-gegevens-per-vierkant-en-postcode-2020-2019-2018
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