czechia open data

Regions (Kraje) of the Czechia, 2026. ADM1 (VÚSC). 14 regions incl. Hlavní město Praha. kod is a 2-digit RÚIAN region code (e.g. 43 Plzeňský), nutslau the NUTS3 (CZ032). Layer 17.

14 features

Municipalities with Extended Powers (Obce s rozšířenou působností) of the Czechia, 2026. ADM3-level administrative tier (ORP, the 206 municipalities with extended powers). No nutslau on this layer — kod (RÚIAN) is the join key. Layer 14.

206 features

Municipalities (Obce) of the Czechia, 2026. ADM4, the primary join level. 6,258 municipalities. kod 6-digit RÚIAN (≥500000, e.g. 500020 Petrov nad Desnou), nutslau the 12-char obec code = NUTS okres + obec kod (CZ0715500020) rolling up to okres/kraj. Full query 500s → 4 source_parts of 2000 (offsets 0/2000/4000/6000) merged. Full-res heavy → GeoParquet interchange + 0.0001° simplify; 5-view inspection run manually pre-publish. Layer 12.

6,258 features

Districts (Okresy) of the Czechia, 2026. ADM2. 76 districts. kod 4-digit RÚIAN (e.g. 3607), nutslau the LAU/NUTS4-style code (CZ0524). Layer 15.

76 features

City districts (Městské obvody a městské části) of the Czechia, 2026. Sub-municipal: the městské obvody / městské části of the territorially divided statutory cities plus the 57 městské části of Prague (RÚIAN layer 8, MestskyObvodMestskaCastVeStatutarnimMesteAHlavnimMestePraze). Declared 2026-09-15 for the SLDB 2021 collection, whose every dataset carries this level under ČSÚ codelist 44 (CISMC) with codes equal to RÚIAN kod — 142 == 142 verified against the census file. One request (4.8 MB, no transfer cap hit). kod 6-digit RÚIAN (e.g. 554669 Hrabová, 500054 Praha 1); dropped: obec (parent code), mop, spravniobvod, dates, transaction ids. Coverage is NOT national — only the divided cities — so the full-extent view shows islands by design.

142 features

Basic settlement units (Základní sídelní jednotky) of the Czechia, 2026. Sub-municipal statistical unit (RÚIAN layer 6, ZakladniSidelniJednotka), the finest census grain: SLDB 2021 publishes population and dwellings for 23,583 ZSJ (ČSÚ codelist 47, CISZSJ) whose codes equal RÚIAN kod once ČSÚ's 6-digit zero-padding is stripped (23,583 of 23,604 match by code AND name; the 21 extra boundary units post-date the census). Declared 2026-09-15. Layer advertises maxRecordCount 1,000,000 but every query is transfer-capped at 2,000 features (exceededTransferLimit) at ~27 MB/page → 12 source_parts (offsets 0…22000) merged; ~320 MB of GeoJSON → GeoParquet interchange + 0.00005° simplify (block-size tier). kod RÚIAN integer → string (1…6 digits, e.g. 19 Abertamy, 195898 Obůrky-Paseky) — a recipe joining ČSÚ data must strip the padding, disclosed here. Dropped: katastralniuzemi (parent), charakterzsjkod (classification), vymera (derived area), dates, transaction ids. Driver skips inspection on the parquet path — run the 5-view GeoParquet recipe manually pre-publish and stamp inspection.simplified.

23,604 features