Every number in HiLo comes from a public dataset or a published list. Thank you to the people and organisations who maintain them. Each deck is a snapshot taken when it was built, so live figures may have moved since.

Countries & cities

• World Bank Open Data, licensed CC BY 4.0: population, GDP, life expectancy, internet use, emissions, health and military spending, tourism, trade, farmland, forests, electricity, unemployment and fertility. data.worldbank.org
• mledoze/countries (country names, flags and land area), licensed ODbL 1.0. github.com/mledoze/countries
• GeoNames (city and capital populations), licensed CC BY 4.0. geonames.org
• Numbeo (Rent Roulette: rent index, converted to an estimated monthly rent). numbeo.com
• Wikipedia (Empire State: peak areas of historical empires), licensed CC BY-SA 4.0.

Nature & science

• Wikidata, public domain (CC0): mountains, rivers, lakes, islands, waterfalls, volcanoes, dams, skyscrapers and animal speeds. wikidata.org
• AnAge: The Animal Ageing and Longevity Database, Human Ageing Genomic Resources, licensed CC BY 3.0 (Old Timers: record lifespans). genomics.senescence.info
• IUPAC standard atomic weights (Periodic).
• PokéAPI (Pokémon heights and weights). pokeapi.co

Movies, music, TV & games

• TMDB (Blockbusters: box office and posters). This product uses the TMDB API but is not endorsed or certified by TMDB. themoviedb.org
• kworb.net (Hit Play: YouTube music video views; Heavy Rotation: Spotify monthly listeners). kworb.net
• Netflix "What We Watched" engagement report, January to June 2026 (Binge Watch). about.netflix.com
• Wikipedia, licensed CC BY-SA 4.0: best-selling video games (Player One), best-selling books, most-streamed songs, and unicorn startups.
• Open Library (book covers). openlibrary.org
• TwitchMetrics (Stream Team: Twitch followers).

Money & sport

• CoinGecko (To The Moon). Data provided by CoinGecko.
• Forbes (Billionaire Club: real-time net worth; Trophy Assets: team valuations).
• companiesmarketcap.com (Market Movers and Top Line: company value and revenue).
• MenuStat, NYC Department of Health and Mental Hygiene, 2018 data via NYC Open Data (Drive-Thru: calories). menustat.org
• Jolpica F1 API, successor to the Ergast API (Grid Legends: race wins). jolpica-f1
• Wikipedia, licensed CC BY-SA 4.0: Olympic medal tables, international caps and goals, superyacht lengths, and car auction records, with recent auction results checked against RM Sotheby's, Gooding Christie's, Bonhams and Mecum.

Trademarks

Names of people, teams, companies, products, films, shows, songs and games appear only to identify what a statistic is about. They belong to their respective owners, who are not affiliated with HiLo and do not endorse it.

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