r/horror
All Things Horror: From Movies & TV to Books & Games
Founded February 2008 · Public — anyone can post
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
3,549,003
3.5M
Online now
—
not captured in the last snapshot
Posts per day
97.2
from the last 100 posts, spanning 24.4h
Comments per post
—
no sample yet
Growth · 7d
—
not enough history yet
Growth · 30d
+0.6%
+20K members · ≈33d
Promo tolerance
—
not assessed yet
Last post
Oct 13
sampled Oct 13
Distinct posters
95%
of the last 100 posts
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
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.
We are a recognized community for discussion of all things related to the CreepCast Podcast! Enjoy!
/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!
See the full lists on similar subreddits.
r/horror — frequently asked
How many members does r/horror have?
r/horror has 3,549,003 members as of our most recent crawl on Oct 13. 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?
Over the last ≈33 days r/horror changed by +0.6% — a gain of 20K members. We compare against the nearest snapshot we actually hold and state the real span rather than rounding it to a clean "30 days".
How active is r/horror?
Around 97.2 posts per day, measured from the newest 100 posts on Reddit, which span 24.4h. Posting rate matters more than subscriber count when you're deciding where to spend your time — it determines how long your comment stays visible.
When was r/horror created?
r/horror was founded in February 2008 and is a public — anyone can post community. Age matters: an older community with steady growth has survived Reddit's moderation churn; a young one with a spike may not.
Who posts in r/horror?
Of the last 100 posts we sampled, 95% came from distinct accounts; the newest was published Oct 13. A low share means a feed dominated by a handful of accounts (bots, mods, or one prolific poster) rather than a community.
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
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