Curated list of high-quality public data providers, open data portals, government APIs, dataset repositories, and other accessible sources to inspire data projects, analysis, and exploration.
This is a living collection of reliable places to find datasets, from general platforms like Kaggle to specialized ones like CDC or data.gov. Contributions welcome!
- General / Aggregators
- Government & Public Sector
- Health & Medicine
- Finance & Economics
- Science & Research
- Geospatial & Environment
- Social Sciences & Demographics
- Machine Learning & AI-Focused
- APIs & Real-Time Data
- Other / Niche
- Contributing
- License
- data.world — Collaborative platform for finding, sharing, and querying datasets.
- Google Dataset Search — Search engine across thousands of open data repositories.
- Google BigQuery Datasets — Wide variety of public datasets through its Public Dataset Program.
- Huwise Hub — Public open data portal hosting thousands of free, curated datasets (government, health, geospatial, etc.) with visualization tools, APIs, and self-service access.
- Kaggle — Massive community-driven dataset hub with competitions and notebooks.
- UCI Machine Learning Repository — Classic ML datasets.
- World Bank Open Data — Free and open access to global development data.
- data.gov — The home of the U.S. Government's open data (300k+ datasets).
- Data USA — Free platform that allows users to collect, analyze, and visualize shared U.S. government data.
- USAFacts — Non-partisan data on U.S. economy, population, health, etc.
- USAspending.gov — U.S. government's primary portal for federal spending transparency, covering contracts, grants, loans, and awards with searchable/downloadable data and APIs.
- CDC Data & Statistics — Public health datasets from the Centers for Disease Control.
- CMS Data — Public datasets from the Center for Medicare and Medicaid Services.
- Health Data — Public datasets from the Department of Health and Human Services (HHS).
- HHS Open Data — U.S. Department of Health and Human Services open data portal.
- WHO Global Health Observatory — Global health statistics.
- Submit a pull request to add a source.
- Submit a pull request to add a source.
- Submit a pull request to add a source.
- Submit a pull request to add a source.
- Submit a pull request to add a source.
- Submit a pull request to add a source.
- OpenAQ — Global air quality data.
Contributions are welcome! Submit a pull request.
To add a source:
- It should be publicly accessible (free or freemium).
- Prefer high-quality, reliable providers.
- Format:
- [Provider Name](URL) — Brief one-sentence description.
CC0 1.0 Universal (public domain)