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Subreddit Directory

Best subreddits for community builders and community managers

Where community professionals share what drives engagement and what kills communities.

Community building is unusual among marketing disciplines because Reddit is not just a place to discuss it, it is a working example of it happening in real time, with visible moderation decisions, engagement patterns, and the slow accumulation of culture that no case study can fully capture. The subreddits below split across a few distinct angles: dedicated community management practice, platform-specific communities like Discord and Twitch where the mechanics of turning viewers or members into regulars get discussed in granular detail, and the business case for building an owned community at all, made by marketers and SaaS founders who need the retention or support-deflection numbers to justify the investment. Moderation judgment calls come up as often as growth tactics, because keeping a community healthy is a different skill from growing it.

9 subredditscurated for Community BuildingMember counts are rounded and change daily.

Written by the GrowReddit team

How we know this+

This guidance reflects how our team actually works on Reddit. We research subreddits by hand, read each community's posting rules and moderator guidelines before recommending it, and spend time reading threads to understand the tone and what genuinely earns upvotes. Our recommendations favour community-first participation, useful posts and honest comments, over promotional shortcuts. Subreddit rules change, so re-read a community's current rules before you post.

Top Community Building subreddits by member count
1
Moderate moderation

Dedicated community for community builders and managers. Covers engagement strategy, moderation, onboarding new members, and the business of professional community management.

Best content types

Engagement tacticsModeration decisionsCommunity health metricsMonetisation models

Posting tip

Specific community situations with your approach and outcome are the most valued posts. "We had a community conflict and here is how we handled it" beats generic community advice.

2

r/Discord

600k+ members
Moderate moderation

Discord server management covers community tools, bot setups, channel architecture, and engagement patterns specific to Discord communities.

Best content types

Server structureBot recommendationsEngagement channelsGrowth tactics

Posting tip

Server screenshots with explanation of the structure and why it works generate engagement. Show your actual community design.

3

r/moderation

40k+ members
Strict moderation

Moderation strategies, community standards enforcement, and the difficult judgment calls in community management are discussed by experienced moderators.

Best content types

Moderation philosophyDifficult case discussionsCommunity rules designMod tool recommendations

Posting tip

Difficult moderation dilemmas with context drive the best discussions. The community values nuance over black-and-white rule application.

4

r/marketing

1.9M+ members
Strict moderation

Marketing professionals debate community as a growth and retention channel here, including when building an owned community is worth the investment versus renting audience on existing platforms. The discussion tends to be more skeptical and ROI-focused than dedicated community subreddits.

Best content types

Community ROI debatesOwned vs rented audience discussionsCommunity-led growth case studiesRetention strategy threads

Posting tip

Bring a business case, not just enthusiasm; this audience wants to know what a community actually did for retention or CAC before they will engage.

5

r/Entrepreneur

5.2M+ members
Strict moderation

Business owners across industries discuss building customer and user communities as a retention and word-of-mouth lever, not just software-specific communities. The advice is less technical than dedicated community subreddits but grounded in real customer retention numbers.

Best content types

Customer community ROI storiesRetention-through-community case studiesWord-of-mouth growth threadsCommunity monetization debates

Posting tip

Tie your community question to a retention or repeat-purchase number; purely conceptual 'should I build a community' posts get generic answers.

6

r/SaaS

820K+ members
Moderate moderation

SaaS founders discuss building user communities around their product specifically for support deflection, retention, and feature feedback, distinct from generic community management. Threads compare Slack, Discord, and forum software for this exact use case.

Best content types

Support-deflection community setupsCommunity platform comparisons for SaaSUser community retention dataFeature feedback loop design

Posting tip

Share what percentage of support tickets your community deflects; concrete deflection numbers get far more engagement than 'we started a community' announcements.

7

r/ProductManagement

250k+ members
Strict moderation

Product managers discuss building in-app and user communities as a discovery and feedback channel, including beta programs, user advisory boards, and community-sourced feature requests. The angle is product development informed by community, not community as a marketing channel.

Best content types

Beta program designUser advisory board structuresCommunity-sourced feedback loopsFeature request triage from community

Posting tip

Describe how you plan to close the loop with community members who give feedback; this audience cares about follow-through, not just collection.

8

r/Twitch

1M+ members
Strict moderation

The general subreddit for the Twitch platform itself, a mix of viewer questions, streamer support, platform news, and drama rather than a dedicated community-building forum. Within that broader mix, streamers do post regularly about chat culture, moderation tooling, and turning one-time viewers into a returning community, so useful threads exist, they just sit alongside a lot of unrelated platform discussion.

Best content types

Streamer community-growth questionsChat and moderation tooling discussionsPlatform news and account supportViewer-to-regular conversion tactics

Posting tip

Tag your post clearly as a streamer or community-growth question, not a general platform issue, and frame it around retention rather than raw growth; this audience has strong opinions on that distinction.

9

r/NewTubers

300k+ members
Relaxed moderation

A mutual-support community for smaller YouTube creators, explicitly built so members can share channels, ask for feedback, and discuss the early-stage work of building a loyal subscriber base from nothing. Self-promotion is not just tolerated, it is the point of the subreddit.

Best content types

Channel feedback requestsEarly subscriber growth tacticsCommunity engagement experimentsCross-promotion threads

Posting tip

Ask a specific question alongside your channel link, like why viewers leave after one video, rather than a bare self-promo drop; specific asks get real critique instead of empty support comments.

How to post effectively

General posting guide for Community Building subreddits

Community building communities are meta, they are communities discussing community building. Contribute to the meta-layer by being a good community participant yourself while sharing your expertise. The best posts in community management subreddits are honest accounts of what made communities succeed or fail. Avoid positioning-as-expert posts, share experience and let others judge the quality of your thinking.

Frequently asked questions

Which subreddits are best for community managers?

r/communitybuilding is the primary community for community management professionals. r/Discord is excellent for Discord-specific community management. r/moderation covers the moderation side of community management. r/marketing has community strategy discussions from a business and brand perspective.

Are there Reddit communities for platform-specific community building, like Discord or Twitch?

r/Discord covers server structure, bot setup, and channel architecture for building an engaged Discord community, while r/Twitch focuses specifically on the mechanics streamers use to turn one-time viewers into a returning chat community. Both communities treat retention, not raw growth, as the harder and more interesting problem, and threads reflect that focus. r/NewTubers covers the equivalent early-stage work for YouTube creators building a subscriber base from nothing, with an explicitly supportive, self-promotion-friendly culture.

Where do SaaS companies discuss building a user or customer community?

r/SaaS has regular threads specifically about building user communities for support deflection, retention, and feature feedback, usually comparing Slack, Discord, and forum software for that exact use case. r/ProductManagement covers the product side of the same question, including beta programs and user advisory boards used to source feedback directly from a community. Both differ from r/communitybuilding in that the community is treated as a product and retention lever rather than a standalone discipline.

Is community building discussed from a business ROI perspective anywhere on Reddit?

r/marketing carries more skeptical, ROI-focused threads about whether an owned community is worth the investment compared to renting audience on existing platforms, which is a useful counterweight to the more evangelistic tone of dedicated community subreddits. r/Entrepreneur has similar discussions from business owners outside of software, often tied to concrete retention or repeat-purchase numbers rather than engagement metrics alone. Bringing a business case rather than general enthusiasm gets a much more serious response in both communities.

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