National Institutes of Health
The U.S. government's medical research agency portal with research, grants and PubMed resources.
National Institutes of Health at a glance
National Institutes of Health is a health website and one of the most visited sites in United States, currently ranked #184 in the country. It was founded in 1887 by U.S. Government and is headquartered in Bethesda, MD, USA. Today National Institutes of Health is owned by U.S. Department of Health and Human Services. Our estimates put its audience at ≈ 400 million visits per month. The business earns money mainly through public funding. Its closest rivals include cdc.gov, who.int, mayoclinic.org.
Traffic statistics
Traffic history
| Period | Visits | Change |
|---|---|---|
| Q1 | ≈ 376 million / month | +2% |
| Q2 | ≈ 388 million / month | +3% |
| Q3 | ≈ 400 million / month | +3% |
| Q4 | ≈ 424 million / month | +6% |
Traffic sources
- Organic search52%
- Direct31%
- Referral9%
- Social5%
- Paid3%
Audience & demographics
- Women56%
- Men44%
- Age 25-3426%
- Age 35-4425%
- Age 45-5422%
The audience is concentrated in United States, skewing urban and mobile, with usage peaks in the evening hours.
Geographic reach
- United States86%
Home market
- Diaspora and neighbouring markets7%
- Europe3%
- North America2%
- Rest of world2%
SEO profile
- Estimated organic traffic
- ≈ 120 million visits / month
- Branded share of search
- High — brand terms lead the keyword profile
- Indexed pages
- Large — category, listing or article level
- Primary search market
- United States
Top organic keywords
| Keyword | Position | Volume | Traffic share |
|---|---|---|---|
| national institutes of health | 1 | Very high | Dominant |
| symptoms | Top 10 | High | — |
| doctor appointment | Top 10 | High | — |
| hospital near me | Top 10 | High | — |
Backlink profile
- Referring domains
- Tens of thousands
- Link profile
- News coverage, directories, blogs and partner sites
- Authority
- High within the United States web
Top referral sources
- News and media31%
- Directories and aggregators24%
- Blogs and forums20%
- Partner sites14%
- Other11%
Technology stack
Website technologies
Advertising & analytics technologies
Stack details are inferred from public front-end signals and engineering communications; internal systems may differ.
Mobile app statistics
Available in the local store
Available in the local store
- App share of traffic
- ≈ 75% mobile
- Position in country
- Among the leading health apps in United States
Company information
- Website
- nih.gov
- Sector
- Health
- Owner
- U.S. Department of Health and Human Services
- Owner type
- Government agency
- Founders
- U.S. Government
- Founded
- 1887
- Headquarters
- Bethesda, MD, USA
- Employees
- 20,000+
- Ownership
- U.S. Department of Health and Human Services controls the platform. Ownership details are based on public filings and press reporting.
- Revenue
- N/A (public service)
- Languages
- English, Spanish
- Top traffic sources
- organic search, direct, referral
Financials
- Revenue
- N/A (public service)
- Ownership
- Government agency
- Reporting
- Figures based on public filings, press reports and market estimates
Business model & revenue
National Institutes of Health operates a health information and services platform focused on United States. The U.S. government's medical research agency portal with research, grants and PubMed resources. Revenue comes mainly from public funding, supported by the other lines listed below.
- Public funding
Products & services
Related deals on Amazon
As an Amazon Associate, Global Site Index earns from qualifying purchases.
International presence
- Primary market
- United States
- Expansion
- Regional and diaspora audiences beyond the home market
Employee statistics
Customer statistics
Website rankings
- Country rank (United States)
- #184 in this index
- Sector rank
- Leading health site in United States
- Global rank
- 120
Main competitors
Website comparisons
| Website | Monthly visits | Rank | Notes |
|---|---|---|---|
| cdc.gov | ≈ 240 million / month | #185 class competitor | — |
| who.int | ≈ 180 million / month | #186 class competitor | — |
| mayoclinic.org | ≈ 120 million / month | #187 class competitor | — |
What is National Institutes of Health?
National Institutes of Health (nih.gov) is a health information and services platform serving users in United States. The U.S. government's medical research agency portal with research, grants and PubMed resources. It ranks #184 among the most visited websites in the country in this index, within the health category.
Who owns National Institutes of Health?
The site is operated by U.S. Department of Health and Human Services, founded by U.S. Government. The company was established in 1887 and is headquartered in Bethesda, MD, USA. It employs around 20,000+.
Traffic and audience
Traffic estimates place National Institutes of Health at roughly 400 million visits per month, about 13.3 million per day. Around 75% mobile of sessions come from mobile devices, and visitors view about 4.2 pages per visit with an average session of 5 min.
How National Institutes of Health makes money
Revenue comes primarily from public funding, alongside .
Competitors in United States
Its closest rivals include cdc.gov, who.int, mayoclinic.org.
Data and accuracy
Company facts are drawn from public sources. Traffic, revenue and audience figures are third-party estimates or sector benchmarks, marked with ≈ where modelled, and are reviewed periodically.
Company history & milestones
- 1887
National Institutes of Health is founded in Bethesda, MD, USA.
- Growth phase
Expands its health offering and moves to a mobile-first product.
- Today
Ranks #184 among the most visited websites in United States.
User reviews & ratings
| Source | Score | Reviews | Notes |
|---|---|---|---|
| Google Play | ≈ 4.3 / 5 | — | Ratings from the local store listing |
| App Store | ≈ 4.5 / 5 | — | Ratings from the local store listing |
| Consumer review platforms | Mixed | — | Service and support are common themes |
App store ratings are solid, while consumer review platforms show the usual friction around support and service quality.
Pros & cons
Pros
- Reliable health information in the local language
- Online appointment and record access
- Doctor and hospital directories
- Free to use for patients
Cons
- Advice cannot replace a consultation
- Appointment availability is limited
- Some content is sponsored
- Interface dated in places
Key statistics
Frequently asked questions
Who owns National Institutes of Health?
National Institutes of Health is operated by U.S. Department of Health and Human Services. Government agency structure, based on public filings and press reporting.
Where is National Institutes of Health headquartered?
National Institutes of Health is headquartered in Bethesda, MD, USA.
When was National Institutes of Health founded?
National Institutes of Health was founded in 1887 by U.S. Government.
How many employees does National Institutes of Health have?
National Institutes of Health employs approximately 20,000+ people.
What is National Institutes of Health's revenue?
National Institutes of Health's revenue: N/A (public service).
Who are National Institutes of Health's competitors?
Main competitors in United States include cdc.gov, who.int, mayoclinic.org.
How does National Institutes of Health make money?
Mainly public funding.
Is National Institutes of Health publicly traded?
National Institutes of Health's ownership: Government agency.
How many visitors does National Institutes of Health get?
Third-party estimates place National Institutes of Health at roughly 400 million visits per month, mostly from United States, with 75% mobile traffic.
Is National Institutes of Health safe?
National Institutes of Health is an established health site founded in 1887 and ranked #184 in United States; use the official domain nih.gov and HTTPS.
Popular searches
Data sources & confidence
- Company website and public announcementsnih.gov
- Third-party traffic estimation providersSimilarweb-class estimates
Visit figures are modelled, not measured
- App store listingsApple App Store, Google Play
- Press and market coverageUnited States and international business media
- Data confidence
- Medium for company facts, medium-low for traffic and financial estimates. All modelled figures are rounded and marked with ≈.
- Last updated
- September 2026
Traffic, revenue and audience figures are third-party estimates or derived from sector benchmarks, and are reviewed periodically.
Social media profiles & statistics
Official brand account
Announcements and support
Community and campaigns
Company and hiring updates
Brand and product videos