There are around 14 recognised Plain Tribe communities, 15 Hills Tribe communities & 16 recognised Scheduled Caste communities in Assam: Chandan Brahma

Boro and Borokachari records highest in terms of community-wise ST population (including BTC): Government Report

Guwahati: The Minister of Department of Welfare of Plain Tribes & Backward Classes, Chandan Brahma in a query raised by the AIUDF MLA Mamun Imdadul Haque Chawdhury before the August house of the Assam Legislative Assembly stated that there are around 14 recognized Plain Tribe communities, 15 Hills Tribe communities and 16 recognized Scheduled Caste communities in the state.

While presenting the data in List 1, the minister informed that the lists of 16 Scheduled Caste communities in the state are:-

1. Bansfor
2. Bhuinmali, Mali
3. Brittial, Banik, Bania
4. Dhupi, Dhubi
5. Dugla, Dholi
6. Hira
7. Jalkot
8. Jhalo, Malo, Jhalo-Malo
9. Kaibort, Jalia
10. Lalbegi
11. Mahara
12. Mehtar, Bhangi
13. Muchi, Rishi
14. Namasudra
15. Patni
16. Sutradhar.

Similarly, he also presented the data of the list of ST (in Autonomous Districts)

1. Chakma
2. Dimasa, Kachari
3. Garo
4. Hajong
5. Hmar
6. Khasi, Jaintia, Shantong, Panor, War, Bhoi, Lyngngam
7. Any Kuki Tribes including: -

(i) Biate, Biete (ii) Changsan (iii) Changloi (iv) Doungel (v) Gamalhou (vi) Gangte (vii) Hanneng (viii) Haokip Haupit (ix) Guite (x) Haolai (xi) Hongma (xii) Hongsungh (xiii) Hrangkhwal Rongkhol (xiv) Jonglo (xv) Khawchung (xvi) Khawath lang, Khothalong (xvii) Kholhau (xviii) Khelma (xix) Kipgen (xx) Kuki (xxi) Lengthang (xxii) Lhanguin (xxiii) Lhoujen (xxiv) Lhouvum (xxv) Lupheng (xxvi) Misao (xxvii) Mangjel (xxviii) Riang (xxix) Sairhom (xxx) Selnam (xxxi) Singson (xxxii) Sitlhon (xxxiii) Sukte (xxxiv) Thado (xxxv) Thomgagon (xxxvi) Ulbah (xxxvii) Vaiphei

8. Lakha
9. Man (Tai Speaking)
10. Any Mizo (Lushai) Tribes
11. Karbi
12. Any Naga Tribes
13. Pawi
14. Sytheng
15. Lalung

Also, as per Government records, the list of Scheduled Tribe (in the state of Assam excluding the Autonomous Districts and including the BTC)

1. Barmans
2. Boro, Borokachari
3. Deori
4. Hojai
5. Kachari, Sonowal
6. Lalung
7. Mech
8. Miri (Miching)
9. Rabha
10. Dimasa
11. Hajong
12. Singpho
13. Khampti
14. Garo

See here:

Community wise SC population of Assam as per Census 2011

Community wise ST population in the plain district of Assam (including BTC)

Community wise ST population in the Hills Autonomous District (excluding BTC)