r/horror
R/HORROR, known as Dreadit by our subscribers is the premier horror entertainment community on Reddit. For more than a decade /R/HORROR has been reddit.com's gateway to all things Horror: from movies & TV, to books & games.
Members
3,520,644
3.5M
Online now
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not captured in the last snapshot
Posts per day
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no sample yet
Comments per post
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no sample yet
Growth · 7d
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not enough history yet
Growth · 30d
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not enough history yet
Promo tolerance
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not assessed yet
Last post
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no sample yet
Distinct posters
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no sample yet
Tracking since Aug 25 · growth spans are the real distance between snapshots, not rounded windows. Posts/day is measured from the community’s own newest posts on Reddit, not from what Prowlo happens to crawl.
Member growth
Tracking since Aug 25 — growth charts appear after a week of history.
Similar by content
Communities that discuss what r/horror discusses.
Independent horror discussion and recommendations that will never see the likes of a cinema.
r/ScaryStories is a subreddit for original, written short horror fiction.
/r/movies is the world's largest online film community, with over 37,000,000 members. Come on in and talk about movies with us!
This is a place to discuss horror literature. Any book is up for discussion as long as that discussion is respectful. It doesn't matter if you're into Stephen King, Octavia Butler, Jack Ketchum or Shirley Jackson, this is the place to share that love and discuss to your heart's content.
See the full lists on similar subreddits.
r/horror — frequently asked
How many members does r/horror have?
r/horror has 3,520,644 members as of our most recent crawl on Aug 25. Prowlo re-checks tracked communities on a rolling schedule, so this figure moves rather than sitting frozen at whatever it was when a scraper last ran.
Is r/horror growing?
We don't have 30 days of snapshot history for r/horror yet, so we're not going to invent a growth number. We've been tracking it since Aug 25; the chart fills in as history accumulates.
How active is r/horror?
We don't have a reliable posting-rate sample for r/horror yet. Subscriber count alone is a poor guide to whether a community is active, so treat this one as unverified until the next sample lands.
Can I promote my product in r/horror?
We don't have a promo-tolerance read for r/horror yet. Default to the safe approach: read the sidebar rules, contribute in threads where you gain nothing, and mention your product only when it is the honest answer to someone's question.
How do I monitor r/horror for mentions?
Hit Watch on this page. Prowlo starts crawling r/horror into your Dataset — every new post indexed and embedded, searchable semantically, queryable by your AI agent over MCP, and able to trigger keyword alerts in Slack. Prowlo is read-only; it never posts on your behalf.
Can my AI agent read r/horror's stats?
Yes. Everything on this page is one MCP tool call away: catalog_get_subreddit returns r/horror's members, growth, promo tolerance and similar communities as typed JSON — free, no credits. Connect your agent to api.prowlo.com/mcp and it can vet the community and start watching it in the same conversation.
Read-only · Human-in-the-loop
Prowlo never posts for you