Worldwide domain rankings
Most Popular Health, Science and Government Websites
Compare public agencies, scientific institutions and health-information services using a common worldwide domain ranking. These entries represent selected domains, not a ranking of institutional quality.
21 selected domains
21 currently in the Top 1,000
Snapshot: November 1, 2026
European Union (#109) ranks highest among these selected health, science & government domains, followed by National Institutes of Health (#141).
Compare website rankings
Ranks are worldwide domain positions, not a separate ranking within this category. The category is a selected collection, not a complete list of every website in the field.
| Worldwide rank | Website | What it does |
|---|---|---|
| #109 | European Unioneuropa.eu | Europa is an official European Union portal for institutions, policies, news and public services. |
| #141 | National Institutes of Healthnih.gov | The US National Institutes of Health provides biomedical research information, grants and health resources. |
| #236 | NISTnist.gov | The US National Institute of Standards and Technology provides research, measurement and standards information. |
| #239 | The Weather Channelweather.com | The Weather Channel offers forecasts, radar and weather-related information. |
| #270 | World Health Organizationwho.int | The World Health Organization publishes international public health information, disease guidance and statistics. |
| #291 | GOV.UKwww.gov.uk | GOV.UK provides UK government services, public information, policies and official guidance. |
| #360 | CDCcdc.gov | The US Centers for Disease Control and Prevention provides public health guidance, data and research. |
| #363 | United Nationsun.org | The United Nations publishes information about its agencies, international activities, reports and initiatives. |
| #373 | NASAnasa.gov | NASA publishes space mission news, scientific research, images and educational resources. |
| #524 | NOAAnoaa.gov | NOAA provides weather, ocean, climate and environmental research and data. |
| #597 | California Governmentca.gov | California's official government portal provides access to state agencies, services and public information. |
| #626 | UNESCOunesco.org | UNESCO shares information about international education, science, culture and heritage work. |
| #643 | AccuWeatheraccuweather.com | AccuWeather provides weather forecasts, radar maps and weather news. |
| #664 | Library of Congressloc.gov | The Library of Congress offers digital collections, catalogues, exhibitions and research resources. |
| #666 | ISOiso.org | The International Organization for Standardization develops and publishes international standards. |
| #720 | FDAfda.gov | The US Food and Drug Administration provides information about food, medicines and regulated products. |
| #835 | USDAusda.gov | The US Department of Agriculture provides information about agriculture, nutrition and rural programmes. |
| #895 | World Bankworldbank.org | The World Bank publishes development research, economic data and international projects. |
| #912 | EPAepa.gov | The US Environmental Protection Agency publishes information on environmental protection, regulations and research. |
| #931 | Mayo Clinicmayoclinic.org | Mayo Clinic provides healthcare information about conditions, treatments and its medical services. |
| #944 | US State Departmentstate.gov | The US Department of State publishes foreign policy, travel and diplomatic information. |
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