Reddit Subreddit Database — Audience Finder & Targeting Data

Find the right subreddits, with real numbers attached. Search or browse Reddit's community catalogue and get each subreddit's subscriber count, categories and description as clean rows. The data comes from Reddit's own advertiser targeting catalogue, so it is curated and consistent — not stitched together from scattered public endpoints.

Zero setup. No login, no token, no cookies. Press Start.

You provide	You get back
Keywords (e.g. crypto, gardening)	Every subreddit Reddit matches to that topic, with subscriber counts
Nothing	The whole catalogue, ranked biggest-first
A different mode	Reddit's geo, interest, device or carrier targeting lists

Why use it

• Audience research — find the communities where a topic actually lives, sized by subscribers, before you post or advertise.
• Ad planning — these are the exact communities, interests, locations, devices and carriers Reddit lets advertisers target.
• Market mapping — one keyword returns the full cluster of related subreddits (searching crypto surfaces r/CryptoCurrency at 10.1M down to niche subs under 20k).
• Clean numbers — every row carries a real subscriber count, so you can sort, filter and rank.

How it works

1. The actor mints a fresh short-lived access token from a maintained Reddit Ads session. Nothing for you to configure.
2. It queries Reddit's targeting catalogue for your chosen mode.
3. In subreddits mode it either searches each keyword, or walks the whole catalogue with cursor pagination (100 per page).
4. Rows are filtered by minSubscribers, de-duplicated, and pushed to your dataset.

Input

Field	Type	Required	Notes
mode	string	no	subreddits (default), geolocations, interests, devices, carriers.
searchQueries	array	no	Keywords for subreddits mode. Empty = browse the whole catalogue.
minSubscribers	integer	no	Skip communities below this size. Default 0.
maxItems	integer	no	Row cap. Default 1000.
redditSessionCookies	string	no	Advanced. Use your own Reddit Ads session; auto-refreshes.
bearerToken	string	no	Advanced. Raw 24h token override.
scrapedoKey	string	no	Advanced. Run on your own Scrape.do credits.

Example input

{
  "mode": "subreddits",
  "searchQueries": ["crypto", "personal finance"],
  "minSubscribers": 10000,
  "maxItems": 500
}

Output

rowType: "subreddit"

{
  "rowType": "subreddit",
  "id": "t5_2wlj3",
  "name": "CryptoCurrency",
  "url": "https://www.reddit.com/r/CryptoCurrency",
  "subscriberCount": 10129003,
  "categories": ["Crypto"],
  "description": "Stay updated on the latest news, trends, and analysis of the cryptocurrency market.",
  "iconUrl": "https://styles.redditmedia.com/…png",
  "matchedQuery": "crypto"
}

Other modes

Mode	Rows	Fields
geolocations	~1,232	id, name, country, region, city, dma, postalCode
interests	~153	id, name, category
devices	~1,174	make, model
carriers	~72	id, name, countryCode

Pricing

Pay-per-result: $2.00 per 1,000 rows ($0.002 each). No monthly rental. A keyword search returning 25 subreddits costs about five cents.

Notes & limitations

• matchedQuery is present only in keyword-search runs, not when browsing the whole catalogue.
• description and categories are Reddit's own editorial fields and are occasionally empty on smaller or newer communities.
• Browse mode is ordered by subscriber count descending, so maxItems gives you the biggest N communities.
• Subscriber counts are Reddit's advertiser-facing figures and can differ slightly from the number shown on the public subreddit page.

FAQ

Do I need a Reddit account? No. Auth is built in and refreshes itself.

Is this every subreddit on Reddit? It is Reddit's targetable community catalogue, which covers the communities large and active enough for advertisers. Very small or restricted subreddits may not appear.

Can I get subscriber counts for a specific list of subreddits? Search for each name with searchQueries; matches come back with counts attached.

🤖 For AI Agents & LLM Apps

• Purpose: subreddit discovery and audience sizing — turn a topic into a ranked list of communities with subscriber counts.
• Minimal input: { "mode": "subreddits", "searchQueries": ["crypto"] } (no auth needed).
• Output fields: rowType, id, name, url, subscriberCount, categories[], description, iconUrl, matchedQuery.
• Other modes return geolocation / interest / device / carrier rows; check rowType.
• Billing: pay-per-result, $2 / 1,000 rows. maxItems bounds cost.

⚠️ Disclaimer

This actor collects only data Reddit exposes to advertisers in its targeting catalogue. Use it in compliance with Reddit's Terms of Service and applicable law. You are responsible for how you use the data. This tool is for market and audience research and is not affiliated with or endorsed by Reddit, Inc.

SEO Keywords

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