How big are the major social platforms? Users and US reach, 2026

What this dataset measures

Gives scale to a comparison of moderation rules across platforms: a policy at Facebook or YouTube reaches far more people than one at Bluesky or Mastodon. Covers the largest US platforms plus the alternatives promoted by politicians on the left and right.

Geography

Worldwide, United States

Unit of observation

One platform

Update cadence

Irregular

Curator

FactHub

Curated data tables

These related tables form this versioned dataset release. Each table has its own downloadable file and field definitions.

Social platform size

Latest available user figures for eleven social platforms, with the measure behind each.

Unit of observation: One platform

View this table

platform-size.csv text/csv · 3.1 KB (3,206 bytes)

11 field definitions

Field	Type	Meaning	Units	Value type
platform	string	Platform name.	—	observed
owner	string	Owning company or operator.	—	observed
users_monthly	integer	Monthly users as reported or estimated (see value_type and metric). Empty when no monthly figure exists.	users	observed
users_low	integer	A lower-bound or proxy figure: advertising reach, weekly users, or a mobile-only estimate. Empty when not needed.	users	observed
value_type	string	reported (company figure), estimated (third-party), or proxy (a related measure, not monthly users).	—	derived
metric	string	Exact measure behind the figures.	—	observed
as_of	string	Date or month the figure refers to.	—	observed
source_id	string	Id of the source entry for the user figure.	—	observed
registered_accounts	integer	Registered accounts, where the platform publishes them.	accounts	observed
pew_2025_us_adults_pct	number	Share of US adults who say they ever use the platform (Pew, 2025). Empty when Pew did not report it.	percent	observed
notes	string	Caveats and related figures.	—	observed

Supporting files

Source snapshots, manifests, quality reports, documentation, and other materials used to produce or review this release.

• build-size-dataset.js Transformation manifest · text/javascript · 17.7 KB (18,117 bytes)

  Script holding the curated figures and building this dataset.

• dataset-parts.json Documentation · application/json · 16.2 KB (16,581 bytes)

  Sources, table definition and saved analyses for this dataset, as JSON.

Saved analyses

Sources

1. Pew Research Center: Social Media Fact Sheet (2025 survey, fielded Feb. 5 to June 18, 2025, 5,022 U.S. adults) Primary: share of U.S. adults who ever use each platform

   Retrieved October 10, 2026. Publisher copyright; figures reproduced as facts. Figures extracted; source not redistributed

   Archived copy captured October 10, 2026

2. Pew Research Center: Americans' Social Media Use 2025 (November 20, 2025) Primary: report accompanying the fact sheet

   Retrieved October 10, 2026. Publisher copyright; figures reproduced as facts. Figures extracted; source not redistributed

   Archived copy captured October 10, 2026

3. Meta Reports Fourth Quarter and Full Year 2023 Results Primary: Facebook monthly active users

   Retrieved October 10, 2026. Publisher copyright; figures reproduced as facts. Figures extracted; source not redistributed

   Archived copy captured October 3, 2026

4. Neowin: Instagram joins the 3 billion monthly active club (September 2025) Secondary: report of Mark Zuckerberg's announcement

   Retrieved October 10, 2026. Publisher copyright; figures reproduced as facts. Figures extracted; source not redistributed

5. DataReportal: Essential YouTube statistics Secondary: YouTube advertising reach from Google ad-planning data

   Retrieved October 10, 2026. Publisher copyright; figures reproduced as facts. Figures extracted; source not redistributed

6. DataReportal: Essential TikTok statistics Secondary: TikTok advertising reach from ad-planning data

   Retrieved October 10, 2026. Publisher copyright; figures reproduced as facts. Figures extracted; source not redistributed

7. SpaceX free writing prospectus filed with the SEC (May 2026) Primary: X and Grok monthly active users as of March 31, 2026

   Retrieved October 10, 2026. Publisher copyright; figures reproduced as facts. Figures extracted; source not redistributed

   Archived copy captured October 10, 2026

8. Reddit Reports Second Quarter 2026 Results (SEC Form 8-K exhibit) Primary: daily and weekly active uniques

   Retrieved October 10, 2026. Publisher copyright; figures reproduced as facts. Figures extracted; source not redistributed

   Archived copy captured October 10, 2026

9. Social Media Today: Threads reaches 500 million user milestone (June 2026) Secondary: report of Meta's announcement

   Retrieved October 10, 2026. Publisher copyright; figures reproduced as facts. Figures extracted; source not redistributed

   Archived copy captured October 10, 2026

10. Rumble first quarter 2026 results (SEC Form 8-K exhibit, May 14, 2026) Primary: average global monthly active users

    Retrieved October 10, 2026. Publisher copyright; figures reproduced as facts. Figures extracted; source not redistributed

    Archived copy captured October 10, 2026

11. TechCrunch: Bluesky's active user base is shrinking (August 11, 2026), citing Similarweb Secondary: Similarweb estimates for Bluesky, X and Threads

    Retrieved October 10, 2026. Publisher copyright; figures reproduced as facts. Figures extracted; source not redistributed

    Archived copy captured October 1, 2026

12. GV Wire (New York Times): Traffic to Trump's Truth Social falls sharply this summer (August 10, 2026), citing Similarweb Secondary: Similarweb visit estimates for Truth Social

    Retrieved October 10, 2026. Publisher copyright; figures reproduced as facts. Figures extracted; source not redistributed

13. Mastodon project statistics API Primary: daily server, account and active-user counts

    Retrieved October 10, 2026. Publisher copyright; figures reproduced as facts. Figures extracted; source not redistributed

Limitations and reproducibility

Reproducible from cited sources: Each figure is copied from the cited source; Pew percentages are the 2025 row of the Social Media Fact Sheet table, read on 2026-10-10. No calculations beyond sorting.

• Figures are not comparable measures. They mix company-reported monthly users, a combined X-and-Grok figure, weekly users (Reddit), advertising reach (YouTube, TikTok), mobile-only third-party estimates (Bluesky) and web visits (Truth Social). value_type and metric say which is which.
• Most company figures are self-reported and unaudited; announcements (Instagram, Threads) are not filings.
• Monthly users are worldwide; Pew percentages are US adults only.
• Dates differ by up to two years across platforms; Facebook's last per-app figure is from December 2023.
• Truth Social publishes no user count, and no credible independent monthly-user estimate was found.
• Mastodon's figure covers servers that report to the Mastodon project, not every server in the network.
• Pew did not report figures for Rumble or Mastodon.