Local news source MBN released a 2015 mid-year report on the fanclub membership numbers for K-pop boy and girl groups, ranking the top 15 of each gender.
MBN surveyed the official fan clubs** (located in Daum fan cafes) of the numerous boy and girl groups in K-pop. The 2015 numbers were recorded June 4 for girl groups and May 27 for boy groups, while no exact date is specified for 2014.
Girl Groups
{p/n: check out original article here if interested}
Boy Groups
Most of the groups listed saw their fanclub member numbers go down, with the exception of Block B.
1. TVXQ (went down from last year)
2014- 595,425
2015- 555,929
2. BIGBANG (went down)
2014- 286,492
2015- 263,622
3. BEAST (down)
2014- 267,100
2015- 251,646
4. INFINITE (down)
2014- 200,343
2015- 195,605
5. Shinhwa (down)
2014- 173,770
2015- 168,594
6. B1A4 (down)
2014- 167,261
2015- 153,660
7. Block B (up)
2014- 120,989
2015- 140,628
8. Super Junior (down)
2014- 147,160
2015- 134,982
9. EXO (down)
2014- 136,810
2015- 134,083
10. 2PM (down)
2014- 139,350
2015- 127,326
11. BTS
2015- 108,967
12. VIXX
2015-108,526
13. B.A.P
2015- 95,531
14. SHINee
2015- 89,837
15. Teen Top
2015- 86,962
cr: MBN Star
**{p/n: not sure if all counts above are considered as official fanclub members by the other groups just like how Soompi stated, but for TVXQ, this’s a count of their non-official fanclub members registered in TVXQ Daum fancafe. The Official fanclub is Cassiopeia managed by SM}
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Credits:
English News by Soompi (sources: MBN Star: 1 & 2)
Shared by TVXQ! Express
TVXQ! Express 