2020 census open data

60 free datasets tagged “2020 census”. Open any one in Mapstack — no GIS skills, no download.

Census Sections (Secciones Censales) (Spain, 2021)

Census sections (secciones censales) of Spain at 1 January 2021 — SECC_CE_20210101, the smallest official statistical geography and the one the Censos de Población y Viviendas 2021 results are tabulated on. 36,333 units, national: peninsula, Balearics, Canaries, Ceuta and Melilla. CUSEC is the 10-char join key, composed CPRO(2)+CMUN(3)+CDIS(2)+CSEC(3), leading zeros preserved as a string, 36,333 distinct, 0 nulls. Set-identical BOTH DIRECTIONS against the INE Censos 2021 sección code set (C2021_Indicadores.csv, cross-checked against the SDC21 API's ID_RESIDENCIA_N5): zero census-only, zero boundary-only. CUMUN/CUDIS carry the parent municipality and district; NMUN/NPRO the municipality and province names. Source CRS EPSG:25830 (ETRS89/UTM30N), reprojected to WGS84; source .shp is 110 MB so prepared via GeoParquet interchange with 0.0001-degree simplify. 12 geometries are invalid in INE's SOURCE shapefile — verified there directly, not introduced by our simplify — and were repaired by the produce path. No slivers: nothing below 0.01 Polsby-Popper compactness and nothing below 1,000 m2. LICENCE NOTE: this is INE, NOT the IGN/CNIG LILIM source behind the published ccaa/provincia/municipio grains — a collection carrying both is decision 0086's two-licensed-sources situation. INE prescribes the attribution wording: 'Elaboración propia con datos extraídos del sitio web del INE: www.ine.es', plus the last-update date of the reused information. Operator note: state/seeds/ES.json types[3]; prepared 2026-09-15 during statistics run ine-cpv2021-r01.

36,333 features

570

Viet Nam Provinces (2020, pre-2025 reform)

OCHA COD-AB Viet Nam ADM1, sourced from the General Statistics Office of Viet Nam (GSO). 63 provinces and centrally-governed cities — the division in force from 2020-01-03 until Viet Nam's 2025 administrative reform (effective 2025-07-01) merged them into 34 units. Published to serve data keyed to the pre-reform division, which covers essentially all Vietnamese provincial statistics up to 2024. Source fields DATE=2019-10-01, VALIDON=2020-01-03, VALIDTO=null. Bytes retrieved from the fieldmaps.io COD mirror (https://data.fieldmaps.io/cod/originals/vnm.shp.zip, src_name 'Government of Viet Nam', src_lic CC BY-IGO, src_url the canonical HDX page) because the HDX COD-AB resource has been replaced in place by version 02, the post-reform 34-unit set; source zip sha256 7bd79710. Keep-list ADM1_EN/ADM1_VI/ADM1_PCODE; ADM0_* dropped as constant, DATE/VALIDON/VALIDTO dropped as metadata. One RFC7946 writer artefact (Quang Ninh VN225, GeometryCollection{MultiPolygon, 2-point LineString}) coerced to MultiPolygon per decision 0020 — source geometry was ST_IsValid=1 and plain ogr2ogr produced zero collections; total area preserved to 2e-10 relative. Extent reaches lon 117.8/lat 7.18 because the set includes the offshore island districts as the publisher represents them: Hoang Sa (Paracels) under Da Nang city, Truong Sa (Spratlys) under Khanh Hoa — disputed-sovereignty areas carried exactly as published, not edited. Five-view inspection clean, shoreline-clipped variant (archipelagos render as discrete islands). Produce fixes: multi-normalised only. Resolver miss ms_995cba076f7746109dbeef0787d46c79, join 63/63 at 100%.

63 features

230