About r/mlb
In its own words:
Subreddit for Major League Baseball. Reddit’s MLB Community. From discussions, news, and highlights from all thirty teams.
Community guide
r/mlb (#339, about 3.1 million) is Reddit’s MLB community for discussions, news, and highlights from all thirty teams. Rules: Reddiquette; MLB-related only; be nice; broadcasting/streaming rules; high-quality content; no politics/religion; self-promo limits; use report & modmail. Text/Image (~34.6 ppd).
MLB-only lane
Major League Baseball content—narrower than general baseball rooms that welcome other levels.
Quality + no politics
High-quality bar; politics/religion and shady streaming posts fail.
Practical pointers
Mixed text/image/link; Discussion/News flairs.
SubMouse Editorial
The community was created on Jan 20, 2009, which makes it 17 years old. Since Oct 26, 2026, it has gained 1,518 subscribers (+0.05%). It sits just behind r/hockey (#338) and ahead of r/assholedesign (#340) in our ranking.
Subscriber growth
Between Sep 19, 2026 and Nov 2, 2026, r/mlb went up from 3,122,110 to 3,131,462 subscribers (+9.4K, +0.30%). That is about 213 new members per day. The chart uses our weekly snapshots (9 so far), so it gets longer every week.
What r/mlb talks about
We read the titles of 170 recent posts (Oct 29–Nov 5), the words that come up most are “brewers”, “world”, “series”, “baseball” and “history”. Other frequent themes are offseason, milwaukee, win, october, title and daily. Recurring phrases include “world series”, “milwaukee brewers”, “baseball history” and “daily dugout”. By format, 36% are text posts, 34% are images and 16% are links.
Popular post flairs: :Message: | Discussion (47), :News: | News (26), :Message: | History (20), :Image: | Image (17), :Message: | Opinion (9), :News: | Article (8).
Activity and best time to post
r/mlb gets about 35 new posts a day. The public archive holds 141,611 posts and 2,779,574 comments in total, about 19.6 comments per post. Last week the busiest day was Thursday (80 posts) and the quietest was Sunday (9). Posting peaks around 02:00 UTC and is lowest around 08:00 UTC.
Rules of r/mlb
The moderators of r/mlb list 8 rules. In short:
- Follow all Reddiquette
- All posts must be Major League Baseball-related
- Be Nice
- Broadcasting / Streaming
- High Quality Content
- Politics / Religion
- Self Promotion
- Report & Modmail
How to join
Open reddit.com/r/mlb and press “Join”. Read the community rules in the sidebar before you post: every subreddit is run by its own volunteer moderators.
Frequently asked questions
How many members does r/mlb have?
r/mlb has 3,131,462 subscribers (Nov 2, 2026), which makes it the #339 safe-for-work subreddit in the SubMouse ranking. It added 9,352 members between Sep 19, 2026 and Nov 2, 2026.
How old is r/mlb?
r/mlb was created on Jan 20, 2009, so it has been around for 17 years. The oldest post in the public archive is from Aug 24, 2009.
How active is r/mlb?
Very active: r/mlb gets about 35 new posts a day (average of the last four weeks). Over its lifetime the archive counts 141,611 posts and 2,779,574 comments. In a sample of 170 recent posts we counted 109 different authors.
When is r/mlb most active?
Based on post counts from Oct 29, 2026 to Nov 4, 2026, the busiest day was Thursday and the quietest Sunday, and most posts arrive around 02:00 UTC, with the fewest around 08:00 UTC. More posts also means more competition, so a quieter hour can help a post get noticed.
What is r/mlb about?
The community describes itself as: “Subreddit for Major League Baseball. Reddit’s MLB Community. From discussions, news, and highlights from all thirty teams.” Recent post titles often mention brewers, world, series, baseball and history. Most posts are text posts (36%).
Is r/mlb safe for work?
Yes. Reddit does not mark r/mlb as an 18+ (NSFW) community. SubMouse lists safe-for-work subreddits only.
How do I post on r/mlb?
Join the community on Reddit first, then use “Create post”. r/mlb accepts both text and link posts, with images, videos, galleries and polls enabled. It has 8 posted rules, starting with: “Follow all Reddiquette”; “All posts must be Major League Baseball-related”; “Be Nice”. Moderators remove posts that break the rules, so read them in the sidebar before posting.
Which communities are like r/mlb?
Communities with similar topics include r/baseball (3.2M), r/sports (22.1M), r/leagueoflegends (8.5M), r/worldnews (47.7M) and r/nfl (12.9M).
Stats from public data (data updated Nov 2, 2026; activity, rules and archive totals via the Arctic Shift archive, Nov 6, 2026). Point and comment counts are archive snapshots and can be lower than on Reddit today. SubMouse is an independent directory and is not affiliated with Reddit or the moderators of r/mlb.