Internet Culture

Top Interesting subreddits

Name: Top subreddits by members, growth and activity
Creator: KissMyPost
License: https://creativecommons.org/licenses/by/4.0/

The largest, fastest growing and most active subreddits about Interesting, measured every month.

By KissMyPostData for October 2026

Short answer

158 Interesting subreddits have more than 10,000 members, and 222 have more than 1,000. The largest is r/todayilearned with 41.7 million members. Over the last 12 months r/whoathatsinteresting grew fastest (+1054%) and r/interestingasfuck gained the most members (+1.16M). The median Interesting subreddit with 10,000+ members grew +7.4% over 12 months (120 subreddits with a known growth), against +15% across all subreddits that size.

Largest Interesting subreddits

Largest Interesting subreddits
#	Subreddit	Members	12-mo growth	Commenters / mo
1	r/todayilearned	41.7M	+1.5%	102,097
2	r/Showerthoughts	34.2M	+0.6%	8,098
3	r/videos	26.89M	+0.6%	53,705
4	r/mildlyinteresting	25.44M	+2.6%	127,738
5	r/LifeProTips	23.12M	+1.0%	11,422
6	r/gifs	21.51M	+0.1%	3,697
7	r/Damnthatsinteresting	20.63M	+3.6%	99,065
8	r/interestingasfuck	16.9M	+7.4%	197,765
9	r/lifehacks	14.61M	+0.7%	2,472
10	r/nevertellmetheodds	6.16M	+1.0%	1,466
11	r/coolguides	6.11M	+2.9%	6,184
12	r/YouShouldKnow	5.64M	+2.6%	4,859
13	r/educationalgifs	2.99M	+0.4%	130
14	r/confusing_perspective	2.21M	+6.2%	6,742
15	r/interesting	2.15M	+60%	134,024
16	r/ofcoursethatsathing	2M	+0.7%	646
17	r/specializedtools	1.57M	+0.8%	64
18	r/MachinePorn	1.55M	+0.5%	75
19	r/megalophobia	1.15M	+5.6%	3,864
20	r/RandomThoughts	1M	+7.0%	6,155
21	r/FindTheSniper	854,956	+7.4%	8,117
22	r/CrazyIdeas	851,125	+3.3%	3,944
23	r/mildyinteresting	778,122	+31%	25,668
24	r/LearnUselessTalents	717,188	+1.8%	690
25	r/wikipedia	671,043	+7.1%	5,399

Fastest growing Interesting subreddits

Member growth over 12 months, among subreddits that had at least 18,251 members a year ago.

Fastest growing Interesting subreddits
#	Subreddit	12-mo growth	Members gained	Members	Commenters / mo
1	r/whoathatsinteresting	+1054%	+268,836	294,346	65,193
2	r/AllThatsInteresting	+231%	+80,766	115,794	6,994
3	r/thatsinterestingbro	+229%	+73,517	105,688	7,143
4	r/doohickeycorporation	+184%	+206,122	317,894	7,916
5	r/FascinatingAsFuck	+142%	+61,942	105,614	1,465
6	r/HumansForScale	+80%	+32,897	73,917	135
7	r/claustrophobia	+64%	+24,993	63,882	2,433
8	r/originsofreligion	+64%	+13,610	35,042	98
9	r/interesting	+60%	+811,498	2.15M	134,024
10	r/IWasTodayYearsOld	+57%	+13,647	37,662	250
11	r/AtinAtinLang	+52%	+78,037	227,354	2,506
12	r/intrestingasfuck	+49%	+39,707	120,526	1,471
13	r/mightyinteresting	+49%	+38,856	118,124	628
14	r/ephemera	+48%	+33,317	102,176	960
15	r/opticalillusions	+46%	+90,972	288,218	2,598
16	r/howitsmade	+45%	+14,200	45,461	54
17	r/moldyinteresting	+45%	+16,345	52,894	571
18	r/midlyinteresting	+43%	+33,176	110,053	2,978
19	r/CoolVideosNoMusic	+40%	+20,704	72,066	216
20	r/FoundPhotos	+40%	+53,318	186,520	2,282
21	r/niftyaf	+40%	+31,188	109,854	921
22	r/UtterlyInteresting	+37%	+41,511	152,525	3,138
23	r/CantBelieveThatsReal	+34%	+26,632	105,586	490
24	r/mildyinteresting	+31%	+184,354	778,122	25,668
25	r/friendlyarchitecture	+29%	+6,950	30,785	44

Most members gained

Interesting subreddits that gained the most members
#	Subreddit	Members gained	12-mo growth	Members	Commenters / mo
1	r/interestingasfuck	+1.16M	+7.4%	16.9M	197,765
2	r/interesting	+811,498	+60%	2.15M	134,024
3	r/Damnthatsinteresting	+717,663	+3.6%	20.63M	99,065
4	r/mildlyinteresting	+640,280	+2.6%	25.44M	127,738
5	r/todayilearned	+618,457	+1.5%	41.7M	102,097
6	r/whoathatsinteresting	+268,836	+1054%	294,346	65,193
7	r/LifeProTips	+238,151	+1.0%	23.12M	11,422
8	r/doohickeycorporation	+206,122	+184%	317,894	7,916
9	r/Showerthoughts	+202,368	+0.6%	34.2M	8,098
10	r/mildyinteresting	+184,354	+31%	778,122	25,668
11	r/coolguides	+173,920	+2.9%	6.11M	6,184
12	r/videos	+153,518	+0.6%	26.89M	53,705
13	r/YouShouldKnow	+141,830	+2.6%	5.64M	4,859
14	r/confusing_perspective	+128,452	+6.2%	2.21M	6,742
15	r/lifehacks	+100,285	+0.7%	14.61M	2,472
16	r/opticalillusions	+90,972	+46%	288,218	2,598
17	r/AllThatsInteresting	+80,766	+231%	115,794	6,994
18	r/AtinAtinLang	+78,037	+52%	227,354	2,506
19	r/thatsinterestingbro	+73,517	+229%	105,688	7,143
20	r/FoundPaper	+69,800	+15%	523,587	5,558
21	r/PastAndPresentPics	+65,749	+29%	294,846	10,598
22	r/RandomThoughts	+65,335	+7.0%	1M	6,155
23	r/ScienceNcoolThings	+62,954	+23%	331,332	2,498
24	r/FascinatingAsFuck	+61,942	+142%	105,614	1,465
25	r/megalophobia	+61,214	+5.6%	1.15M	3,864

Most active Interesting subreddits

People who comment in a month, the average of the three months ending September 2026.

Most active Interesting subreddits
#	Subreddit	Commenters / mo	Posts / mo	Members
1	r/interestingasfuck	197,765	5,061	16.9M
2	r/interesting	134,024	2,760	2.15M
3	r/mildlyinteresting	127,738	6,375	25.44M
4	r/todayilearned	102,097	3,603	41.7M
5	r/Damnthatsinteresting	99,065	2,674	20.63M
6	r/whoathatsinteresting	65,193	585	294,346
7	r/videos	53,705	2,587	26.89M
8	r/mildyinteresting	25,668	1,229	778,122
9	r/LifeProTips	11,422	681	23.12M
10	r/PastAndPresentPics	10,598	536	294,846
11	r/FindTheSniper	8,117	391	854,956
12	r/Showerthoughts	8,098	3,579	34.2M
13	r/Infographics	8,062	315	542,868
14	r/doohickeycorporation	7,916	290	317,894
15	r/thatsinterestingbro	7,143	435	105,688
16	r/AllThatsInteresting	6,994	171	115,794
17	r/confusing_perspective	6,742	426	2.21M
18	r/coolguides	6,184	230	6.11M
19	r/RandomThoughts	6,155	2,171	1M
20	r/FoundPaper	5,558	556	523,587
21	r/wikipedia	5,399	1,075	671,043
22	r/YouShouldKnow	4,859	163	5.64M
23	r/MoldlyInteresting	4,429	630	460,767
24	r/CrazyIdeas	3,944	640	851,125
25	r/megalophobia	3,864	257	1.15M

How these lists are made

Members are the member counts measured in October 2026.
Activity (commenters and posts per month) is the average of the three months ending September 2026. Posts by known bots are not counted.
12-month growth compares members now with members a year earlier. A subreddit is ranked by growth only if it already had at least 18,251 members a year ago (the median for subreddits with a known growth), so brand-new communities don't top the list from a base of zero. Subreddits with more monthly active users than 0.808 per member, a sign of inflated activity, are left out of the growth and activity lists.
NSFW communities are excluded: those Reddit marks as 18+, those where most posts are NSFW, and the Adult Content topic.
Topics follow Reddit's own community categories.
The lists are rebuilt every month. Each list shows the top 25 (100 for the largest subreddits overall). Download all lists as CSV (free to reuse under CC BY 4.0, with a link to this page).

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