Subreddit finder: find subreddits by who actually writes there
Find Subs is a subreddit finder for founders, marketers and researchers who know who they want to reach but not where those people post. It filters 302,515 subreddits (as of September 2026 data) by who writes in them: country, age, gender and job. Then it narrows the list by topic, size, activity and whether your own account can post there.
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Want a head start? Browse ready-made lists by topic and profession. Free subreddit lists
- 302,515subreddits with an age estimate for their authors, as of September 2026 data
- 8job groups in the Authors' jobs filter, from software/IT to the trades
- Age + karmaof your own account: My account keeps only the subreddits that would let it post
Same Reddit, very different authors
A subscriber count can't tell you who posts. Here is the share of authors in one job group, among authors who name their job in posts or comments.
- r/SaaS
- 96.6% software/IT, 0.1% trades
- r/Plumbing
- 62.3% trades
- r/Accounting
- 46.1% finance
- r/Dentistry
- 38.7% healthcare
- r/nursing
- 96.7% healthcare
What Find Subs does
Who posts there
Country or US state, communities about one city, an age window, the gender mix (Mostly men, Balanced, Mostly women) and Authors' jobs. Age and gender come from authors who state them, and a subreddit with only 50 to 199 such authors is marked Directional.
My account
Type your account's age in days and its comment karma. Subreddits that would turn such an account away drop out, and Few posts removed for new accounts trims the list further.
Similar to a community or an audience
Name a subreddit that already works for you, or pick one of your audiences, and the results are ranked by how close each community is to it. Every other filter keeps working on top.
Size and activity
Sort by Trending now or Members growing fastest, keep only subreddits Posted within the last 3, 6 or 12 months, and set a minimum share of Posts that get a reply, so a large but silent community doesn't top the list.
Topics
Switch from Subreddits to Topics to see what people discuss rather than where: topics that are rising, topics that return in the same season every year, topics that spike with the news, and the subreddits where each one lives.
Save as audience
Use + Add on single rows or Add all shown, then Save as audience or Copy list. A saved audience opens in Audiences with its demographics and its conversations.
How Find Subs works
Describe the people
Pick countries, an age window, a gender mix or a job group, and add a topic if you have one.
Check your account
Enter its age and karma under My account, then tick posting rules such as New accounts welcome or Links allowed.
Keep the shortlist
Save the subreddits that fit as an audience, then open each one in Subreddits for its rules and best hours.
Who uses Find Subs
Founders selling outside tech
Agencies with several clients
Researchers
What Find Subs doesn't do
Here is what it won't do, so you know before you start.
- It doesn't read a product description or a URL. The search box matches subreddit names and descriptions only.
- It doesn't tell you whether a subreddit tolerates self-promotion. Read that subreddit's rules before you post.
- There is no CSV export. Copy list copies the names, and a saved audience keeps them in your account.
- Age and gender are estimates among authors who state them, not a census of every member.
- NSFW communities stay hidden until you tick Include NSFW.
Find Subs: common questions
How do I find subreddits for my niche?
Start from the buyer rather than a keyword. In Find Subs, set the country, age, gender mix or job of the people you sell to, add a topic, sort by size or growth, and save the subreddits that fit as an audience.
Is there a free subreddit finder?
Find Subs itself isn't free: it comes with every KissMyPost plan, and any plan can be tried for one day. Without an account you can browse ready-made subreddit lists by topic and profession at kissmypost.com/subreddits-for, each with its top 10 and a CSV, and the largest and fastest-growing subreddits at kissmypost.com/top-subreddits.
How do I find subreddits similar to one I already know?
Use Similar to a community or an audience in Find Subs: enter a subreddit you know, or choose one of your audiences, and the rest are ranked by how close they are. You can then filter that ranking by who writes there.
Which subreddits can a new Reddit account post in?
Enter your account's age in days and its comment karma under My account in Find Subs. Subreddits that would refuse that account drop out, and the Few posts removed for new accounts filter narrows the rest.
What are the best subreddits to promote a SaaS?
If you sell to anyone outside tech, usually not the startup ones: 96.6% of r/SaaS authors who name their job work in software or IT (as of September 2026 data). Filter Find Subs by your buyer's job or country instead, and check each subreddit's rules before you post.
Is Find Subs an AI subreddit finder?
No. Every filter works on numbers counted from posts and comments: who writes, how much, how many posts get a reply and what an account needs before it can post. Nothing in the results is written by a language model.
Try Find Subs on any plan.
Find subreddits by the people who write in them, and keep the ones your account is allowed to post in.