NoeFlandre/osm-polygon-wikidata-only

OSM polygons tagged with a wikidata=* reference, enriched with Wikidata descriptions and Wikipedia article text for every valid language-Wikipedia sitelink, with full text and no per-QID article cap. Core and text tables are published as:

• polygons/<stem>.parquet — one row per polygon
• wikipedia/documents/<stem>.parquet — one lossless row per unique Wikipedia article
• polygon_articles/<stem>.parquet — many-to-many link table

Additional derived text and fact tables are:

• wikipedia/sections/<stem>.parquet
• wikivoyage/documents/<stem>.parquet and wikivoyage/sections/<stem>.parquet
• wikidata/facts/<stem>.parquet

Generated on 2026-07-17.

Maintained by Noé Flandre.

Coverage

Geographic coverage

Both maps below aggregate dataset polygons into H3 cells at the same resolution. All denominators and counts are conditional on each polygon carrying an OSM wikidata=* tag.

Wikipedia text coverage

coverage_rate(h) = covered_polygons(h) / all_dataset_polygons(h), where a covered polygon has at least one linked Wikipedia article with non-empty text. Cell colour encodes this fraction from 0% to 100%; grey cells hold fewer than 20 polygons and are not statistically meaningful.

Polygon density

polygon_count(h) = number of dataset polygons whose centroid belongs to H3 cell h. Colour encodes the raw count on a logarithmic scale because counts are highly skewed across the world. Low counts remain visible.

Dataset snapshot

Metric	Value
Polygons	647,762
Unique Wikidata entities	621,210
Polygon-article links	979,581
Languages	349
Geographic regions	234
Core tables size	4.3 GB
Wikipedia documents	872,147
Wikipedia sections	4,629,886
Wikivoyage documents	7,800
Wikivoyage sections	165,295
Wikidata facts	1,629,015
Fully augmented regions	233
Wikipedia + Wikivoyage document words	322,997,069
Augmentation tables size	6.8 GB
Total Parquet size	8.0 GB

Wikipedia + Wikivoyage document words sums the full Wikipedia and Wikivoyage documents and excludes section rows because sections duplicate document text.

Wikipedia coverage funnel

Stage	Count	% of all polygons
All polygons	647,762	100.0%
With >=1 article	272,452	42.1%
With non-empty text	272,451	42.1%
With English coverage	74,587	11.5%
No English, another language	197,865	30.5%
2+ languages	116,179	17.9%
5+ languages	42,972	6.6%
10+ languages	19,212	3.0%

Language distribution

Top 20 languages by Wikipedia document count:

Language	Wikipedia documents	% of total	Polygons
de	76,306	8.7%	92,701
en	67,690	7.8%	74,587
fr	52,315	6.0%	57,543
ceb	43,115	4.9%	44,872
es	34,755	4.0%	38,500
nl	30,682	3.5%	33,977
it	28,798	3.3%	32,046
zh	26,685	3.1%	29,141
sv	24,629	2.8%	26,278
ru	20,771	2.4%	23,269
arz	20,362	2.3%	21,535
pl	18,979	2.2%	20,894
ca	16,833	1.9%	18,414
pt	15,366	1.8%	17,506
cs	15,202	1.7%	16,933
uk	14,912	1.7%	16,996
fa	12,866	1.5%	14,232
ms	11,250	1.3%	11,782
fi	11,126	1.3%	12,394
da	9,582	1.1%	10,260

Concentration:

• Top 1 language: 8.7% of all Wikipedia documents
• Top 5 languages: 31.4% of all Wikipedia documents
• Top 10 languages: 46.5% of all Wikipedia documents
• Top 20 languages: 63.3% of all Wikipedia documents

Long-tail:

• 349 language(s) total
• 0 language(s) appear in fewer than 1 Wikipedia document(s)
• 7 language(s) appear in fewer than 5 Wikipedia document(s)
• 10 language(s) appear in fewer than 10 Wikipedia document(s)
• 4 language(s) appear in fewer than 5 polygons

Augmentation coverage

Metric	Count	Percentage
Core regions	234	100.0%
Fully augmented	233	99.6%
Partially augmented	0	0.0%
Not augmented	1	0.4%
Orphan sidecar stems	0	-

Augmentation is additive and a zero-row sidecar may still represent a completed region. Orphan sidecars (a sidecar with no matching core polygon) do not count toward core regions.

Storage accounting

Core tables size and total storage size are additive:

Metric	Bytes	Human-readable
Core tables size	1,345,684,432	1.3 GB
Augmentation tables size	7,276,941,272	6.8 GB
Total Parquet size	8,622,625,704	8.0 GB

Wikipedia text corpus

Documents

Metric	Value
Document rows	872,147
Unique documents	854,102
Unique Wikidata entities	246,357
Languages	349
Non-empty text	872,136
Empty / null text	11
Characters	2,124,905,477
Words	312,903,766
Estimated tokens	530,899,082
Regions / files represented	233

Sections

Metric	Value
Section rows	4,629,886
Unique sections	4,523,045
Documents represented	852,682
Avg sections per represented document	5.43
Non-empty section rate	100.0%
Unique Wikidata entities	246,354
Languages	349
Non-empty text	4,629,886
Empty / null text	0
Characters	2,815,626,778
Words	440,518,751
Estimated tokens	702,155,243
Regions / files represented	233

Languages

Language	Documents	% of total
de	76,306	8.7%
en	67,690	7.8%
fr	52,315	6.0%
ceb	43,115	4.9%
es	34,755	4.0%
nl	30,682	3.5%
it	28,798	3.3%
zh	26,685	3.1%
sv	24,629	2.8%
ru	20,771	2.4%

Wikivoyage text corpus

Documents

Metric	Value
Document rows	7,800
Unique documents	7,643
Unique Wikidata entities	2,714
Languages	27
Non-empty text	7,797
Empty / null text	3
Characters	64,059,088
Words	10,093,303
Estimated tokens	16,011,810
Regions / files represented	233

Sections

Metric	Value
Section rows	165,295
Unique sections	162,223
Documents represented	7,641
Avg sections per represented document	21.63
Non-empty section rate	100.0%
Unique Wikidata entities	2,713
Languages	27
Non-empty text	165,295
Empty / null text	0
Characters	75,017,560
Words	12,258,376
Estimated tokens	18,690,211
Regions / files represented	233

Languages

Language	Documents	% of total
en	1,469	18.8%
de	1,238	15.9%
pl	741	9.5%
fr	613	7.9%
it	607	7.8%
zh	377	4.8%
es	333	4.3%
pt	310	4.0%
nl	289	3.7%
fa	257	3.3%

Wikidata facts

Metric	Value
Fact rows	1,629,015
Unique facts	1,615,804
Unique subjects	411,760
Distinct properties	8
Non-empty English property label	1,629,015
Non-empty English value label	1,507,029
With qualifiers	82,766
With references	651,183
Unreadable qualifier JSON	1,546,249
Unreadable references JSON	977,832
Regions / files represented	233

Value-type distribution:

Value type	Facts
wikibase-item	1,507,029
time	81,211
quantity	40,775

Top properties:

Property ID	English label	Facts
P31	instance of	481,233
P131	located in the administrative territorial entity	425,674
P17	country	416,524
P1435	heritage designation	153,897
P571	inception	81,211
P2044	elevation above sea level	40,775
P361	part of	28,953
P279	subclass of	748

English labels are requested where available; multilingual labels are preserved verbatim in the Parquet column property_labels.

Schema

polygons

Column	Description
polygon_id	Deterministic ID: <source_pbf_stem>:<osm_type>:<osm_id>.
region	Geofabrik region slug parsed from the source PBF filename (e.g. monaco).
source_pbf	Source PBF filename (e.g. monaco-latest.osm.pbf).
osm_type	OSM element type: way or relation.
osm_id	OpenStreetMap numeric identifier of the element.
wikidata	Wikidata Q-id from the OSM wikidata=* tag.
name	Convenience: tags.name if present, empty string otherwise.
tags	Deterministic JSON object of all OSM tags except wikidata.
tag_keys	Deterministic JSON list of sorted OSM tag keys.
tag_count	Number of OSM tags (excluding wikidata).
osm_primary_tag	Best single tag for coarse analysis, e.g. landuse=forest.
centroid	Polygon centroid as a GeoJSON Point string ([lon, lat]).
lat	Centroid latitude in decimal degrees (WGS84).
lon	Centroid longitude in decimal degrees (WGS84).
bbox	Bounding box as JSON list [min_lon, min_lat, max_lon, max_lat].
geometry	Full polygon geometry as deterministic GeoJSON string in WGS84 lon/lat coordinates.
area_m2	Polygon area in square meters (WGS84 equirectangular approximation).
area_km2	Polygon area in square kilometers.
area_bucket	Human-readable size bucket (e.g. 1-10km2).
has_name	True if the polygon has a name tag.
has_wikidata	True if the polygon has a wikidata tag (always true by filter).
has_wikipedia	True if at least one linked Wikipedia article was fetched.
wikipedia_language_count	Number of Wikipedia languages for which articles were linked.
wikipedia_languages	Deterministic JSON list of language codes (e.g. ["en","fr"]).
wikipedia_article_count	Number of unique article revisions linked to this polygon.
has_english_wikipedia	True if en is among the available languages.
has_french_wikipedia	True if fr is among the available languages.
text_available	True if at least one linked article has non-empty full text.
best_language	Deterministic preferred language code (e.g. en).
extraction_version	Package version that produced the row.
extracted_at	ISO-8601 UTC timestamp at the moment the row was extracted.

wikipedia/documents

Column	Description
document_id	Deterministic document identifier (<wikidata>:<project>:<language>:<page_id>:<revision_id>).
article_id	Deterministic ID: <wikidata>:<language>:<page_id>:<revision_id>.
wikidata	Wikidata Q-id this article is linked to.
project	Wiki project name: always wikipedia for this table.
language	Wikipedia language code, e.g. en.
site	Wikidata sitelink site, e.g. enwiki.
title	Article title as returned by the Wikipedia API.
url	Canonical Wikipedia article URL.
page_id	MediaWiki page ID.
revision_id	Exact revision ID used for text extraction.
revision_timestamp	ISO-8601 timestamp of the revision.
retrieved_at	ISO-8601 UTC timestamp when this pipeline fetched the article.
wikidata_label	Best Wikidata label for the article's language, fallback English.
wikidata_description	Best Wikidata description for the article's language.
wikidata_aliases	Deterministic JSON list of Wikidata aliases.
lead_text	Lead section of the article, plain text.
extract	Short summary/extract if the API provided one.
full_text	Full cleaned article text, plain text.
full_text_format	Encoding of full_text; always plain_text.
article_length_chars	Length of full_text in characters.
article_length_words	Approximate whitespace-token count of full_text.
article_length_tokens_estimate	Rough token count: chars / 4.
thumbnail_url	Thumbnail URL only (no image bytes stored).
thumbnail_width	Thumbnail width in pixels, if known.
thumbnail_height	Thumbnail height in pixels, if known.
categories	Deterministic JSON list of category titles, or [].
license	License string, e.g. CC BY-SA.
attribution	Attribution string for the article.
source_api	Which API was queried: mediawiki_action_api / wikipedia_rest_api.
fetch_status	One of: ok, article_not_found, http_error, rate_limited, parse_error, empty_text.
fetch_error	Short diagnostic on failure, empty string on success.
content_hash	Stable SHA-256 of full_text for change tracking.

polygon_articles

Column	Description
polygon_id	FK to polygons.polygon_id.
article_id	FK to articles.article_id.
wikidata	Wikidata Q-id (denormalized for fast filtering).
language	Wikipedia language code.
source_pbf	Source PBF filename (denormalized).
region	Geofabrik region slug.
osm_type	OSM element type.
osm_id	OSM numeric identifier.
page_id	MediaWiki page ID of the linked article.
revision_id	MediaWiki revision ID of the linked article.
is_best_language	True if this row's language matches the polygon's best_language.

wikivoyage/documents

Column	Description
document_id	Deterministic document identifier (<wikidata>:<project>:<language>:<page_id>:<revision_id>).
article_id	Stable article identifier referenced by polygon_articles/<stem>.parquet.
wikidata	Wikidata QID this document is linked to.
project	Wiki project name: wikipedia or wikivoyage.
language	Wikipedia or Wikivoyage language code (e.g. en).
site	Wikidata sitelink host, e.g. enwiki or enwikivoyage.
title	Page title as returned by the MediaWiki API.
url	Canonical URL of the page.
page_id	MediaWiki page ID (integer).
revision_id	MediaWiki revision ID used to fetch the page text (integer).
revision_timestamp	ISO-8601 timestamp of the revision.
retrieved_at	ISO-8601 UTC timestamp when the pipeline fetched the page.
full_text	Cleaned plain-text document body (Wikipedia articles or Wikivoyage pages).
full_text_format	Encoding of full_text; always plain_text.
article_length_chars	Length of full_text in characters.
article_length_words	Approximate whitespace-token count of full_text.
article_length_tokens_estimate	Rough token estimate: chars / 4.
license	License string (CC BY-SA for Wikipedia/Wikivoyage text).
attribution	Attribution string for the page.
source_api	Which API was queried: mediawiki_action_api or wikivoyage_rest_api.
fetch_status	One of: ok, page_not_found, http_error, rate_limited, parse_error, empty_text.
fetch_error	Short diagnostic on failure, empty string on success.
content_hash	Stable SHA-256 of full_text for change tracking.

wikipedia/sections and wikivoyage/sections

Column	Description
section_id	Deterministic SHA-256 over (document_id, section_index, anchor).
document_id	FK back to documents (Wikipedia or Wikivoyage).
article_id	FK back to the corresponding articles row.
wikidata	Wikidata QID (denormalized for fast filtering).
project	Wiki project name: wikipedia or wikivoyage.
language	Wikipedia or Wikivoyage language code.
site	Wikidata sitelink host.
page_id	MediaWiki page ID (integer).
revision_id	MediaWiki revision ID (integer).
section_index	Sequential position of the section inside the document (integer).
heading	Section heading, or empty string when the section is the lead.
anchor	Section anchor after MediaWiki parsing.
level	Heading level (1..6), or 0 for the lead section (integer).
parent_section_id	Section ID of the enclosing section, or empty string.
section_path	JSON array of ancestor section IDs, in order.
text	Plain-text section body.
text_length_chars	Length of text in characters (integer).
text_length_words	Approximate whitespace-token count of text (integer).
text_length_tokens_estimate	Rough token estimate: chars / 4 (integer).
content_hash	Stable SHA-256 of section.text.
license	License string for this section.
attribution	Attribution string for this section.

wikidata/facts

Column	Description
fact_id	Deterministic SHA-256 over (subject, property, value, ordinal).
wikidata	Wikidata QID the fact belongs to (the subject).
property_id	Property P-id (e.g. P17).
property_label_en	English label for the property, when available.
property_labels	Deterministic JSON object of property labels per language.
value_type	Wikidata value datatype: wikibase-entityid, string, quantity, time, ...
value_entity_id	Entity-valued object QID, when the value is a Wikidata entity.
value_label_en	English label for the value entity, when available.
value_labels	Deterministic JSON object of value labels per language.
value_text	Rendered text representation of the value.
numeric_value	Numeric amount for quantity-typed values, otherwise null.
unit_entity_id	Wikidata QID of the unit (e.g. Q11573 for metre).
rank	Wikidata rank: preferred, normal, or deprecated.
qualifiers	Deterministic JSON object of qualifier snaks, or {} when absent.
references	Deterministic JSON array of reference groups, or [] when absent.
retrieved_at	ISO-8601 UTC timestamp when the pipeline fetched the entity.
source_api	Which API was queried (always wikidata_action_api).

Data sources & licenses

• OpenStreetMap polygons: (c) OpenStreetMap contributors, licensed under ODbL 1.0.
• Wikidata entity data: CC0 1.0.
• Wikipedia article text: licensed under CC BY-SA 4.0 by the respective Wikipedia editors; attributed inline per article.

How to load

from datasets import load_dataset
ds = load_dataset("parquet", data_files={
    "polygons": "hf://datasets/NoeFlandre/osm-polygon-wikidata-only/polygons/*.parquet",
})