CBS Wijk- en Buurtkaart 2021 to 2025, downloaded from the PDOK GeoPackages. The layers are gemeenten (nld_admin2), wijken (nld_admin3) and buurten (nld_admin4). Credit: © Kadaster / Centraal Bureau voor de Statistiek.
ST_Area returns m². Reproject with ST_Transform(geometry, 'EPSG:28992', 'EPSG:4326', always_xy := true).water is NEE for land, JA for water and B for the single Belgian row, GM0998 Buitenland. Filter on water = 'NEE' for land-only analysis.gemeentecode. Join on (gemeentecode, water).9997 or 9998.wijkcode and gemeentecode, and wijken carry gemeentecode.Codes are not stable identities. From 2024 to 2025, 235 buurt codes appeared and 80 disappeared. Also, 14,476 of the 14,494 land buurten that kept their code have geometry that isn't byte-identical. Compare years by overlap, not by code or ST_Equals:
topo-tools change classifies a year pair. Its --link-by-code only links codes that are unique, so first filter both inputs to water = 'NEE'.
These are the PDOK revisions served on 2026-09-27: versie 3 for 2021 to 2023, versie 2 for 2024 and versie 1 for 2025. PDOK marks only 2022 as final.