What are true crime communities?

Communities for fans of true crime podcasts, documentaries, books, and ongoing cases. Reddit dominates this space with massive subreddits covering cold cases, citizen detective work, and specific cases that have captured public attention. Discord servers offer real-time discussion, watch parties, and deeper dives into particular investigations.

Where do most true crime communities live?

Independent Platforms is the most common platform in this report (62% of 13 listings).

Are most of these communities free?

69% are free to join. The rest require payment, an application, or both.

How big is a typical true crime community?

Among listings with public size data, the average is 1.1M members and the median is 451K. The median is usually the better signal for a typical group because a few large ones inflate the average.

What do these communities usually include?

Forum is the most common (85%). Others that show up often include paid community, live chat, and online/offline events.

How does Hive Index collect this data?

Listings are submitted by community builders and researchers, reviewed for relevance, and updated with platform, feature, member, review, and traffic data where available.

Where can I see the full list?

The full directory is on Hive Index's True Crime topic page, where you can filter by platform, size, features, and more.

True Crime Communities Report: Stats, Platforms, Trends...

Executive Summary

We analyzed 13 true crime communities listed on Hive Index to understand where people gather, what these groups offer, and which communities attract the most interest.

The big picture: In this smaller sample, true crime listings cluster on Independent Platforms, while a few large groups pull member averages up.

Source: Hive Index community database · Updated 2026-04-28

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Communities: 13
Platforms: 3
Avg members: 1.1M
Median members: 451K

Where True Crime Communities Are Hosted

Independent Platforms
8(62%)
Reddit
4(31%)
Discord
1(8%)

Format mix

Forum / feed-based
12(92%)
Chat communities
1(8%)

Most listings are forum / feed-based (92%).

Independent Platforms leads (62% of listings).

Audience Size & Access

Community size

Tiny
<20 members
0(0%)
Small
20-100 members
0(0%)
Medium
100-1,000 members
0(0%)
Large
1,000-10,000 members
1(8%)
Huge
10,000-100,000 members
0(0%)
Massive
100,000-1M members
4(31%)
Gigantic
1M+ members
1(8%)

7 communities have unknown member counts.

Free vs paid

The average is much higher than the median (1.1M vs 451K), which usually means a few large groups are pulling the average up.

How True Crime Differs From Other Categories

True Crime is less free-to-join, larger, and more paid or gated, compared with typical Hive Index topics.

Metric	True Crime	Hive Index average
Free to join	69%	85%
Median members	451K	25K
Average members	1.1M	669K
Paid or apply-to-join	31%	15%
Live chat	23%	38%
Discord share	8%	16%

Feature Mix

Common features appear in at least 15% of listings.

Common Features

Forum
85%
Paid Community
31%
Live Chat
23%
Online/Offline Events
23%

Niche Features

Courses
8%
Newsletter
8%
Requires Application
8%

Forum appears on 85% of listings.

What Visitors Click

Outbound clicks / mo: 20

Platform supply vs. clicks

Platform	Communities	Share of communities	Outbound clicks	Share of clicks
Independent Platforms	8	62%	9	45%
Reddit	4	31%	10	50%
Discord	1	8%	1	5%

Share is calculated within this topic.

Reddit gets 50% of clicks but only 31% of listings, so visitors click it more than you'd expect from supply alone.

Most-clicked formats

Forum / feed-based
19(95%)
Chat communities
1(5%)

Most-clicked features

Forum
19(95%)
Live Chat
3(15%)
Online/Offline Events
3(15%)
Paid Community
3(15%)
Courses
2(10%)
Newsletter
2(10%)

Most-clicked size ranges

Gigantic
9(45%)
Massive
3(15%)
Large
1(5%)

Top-clicked listings

r/UnresolvedMysteries
9(45%)
Uncovered
2(10%)
The CaseDive
2(10%)

Most clicks go to forum / feed-based and chat communities communities.

Trends

Founded year

1995

1999

2019

10 communities have no founding year on file.

Most listed groups were founded around 1995.

Methodology & FAQ

Methodology

This report uses communities in the Hive Index database tagged as True Crime. We exclude removed or suppressed listings. Member counts, traffic, features, reviews, and ratings may vary by source and are updated periodically.

•We only have a handful of listings so far, so treat these numbers as directional.
•Last updated 2026-04-28

FAQ

: Communities for fans of true crime podcasts, documentaries, books, and ongoing cases. Reddit dominates this space with massive subreddits covering cold cases, citizen detective work, and specific cases that have captured public attention. Discord servers offer real-time discussion, watch parties, and deeper dives into particular investigations.
: Independent Platforms is the most common platform in this report (62% of 13 listings).
: 69% are free to join. The rest require payment, an application, or both.
: Among listings with public size data, the average is 1.1M members and the median is 451K. The median is usually the better signal for a typical group because a few large ones inflate the average.
: Forum is the most common (85%). Others that show up often include paid community, live chat, and online/offline events.
: Listings are submitted by community builders and researchers, reviewed for relevance, and updated with platform, feature, member, review, and traffic data where available.
: The full directory is on Hive Index's True Crime topic page, where you can filter by platform, size, features, and more.