| S.N. | Districts | Headquarters | Area (km²) | Population (2011) | Population Density (/km²) |
|---|---|---|---|---|---|
| 1 | Baksa | Mushalpur | 2,457 | 950,075 | 387 |
| 2 | Bajali | Pathsala | 418 | 253,816 | 610 |
| 3 | Barpeta | Barpeta | 3182 | 1,693,622 | 532 |
| 4 | Biswanath | Biswanath Chariali | 1415 | 612,491 | 430 |
| 5 | Bongaigaon | Bongaigaon | 1,093 | 738,804 | 676 |
| 6 | Cachar | Silchar | 3,786 | 1,736,319 | 459 |
| 7 | Charaideo | Sonari | 1,069 | 471,418 | 441 |
| 8 | Chirang | Kajalgaon | 1,170 | 482,162 | 412 |
| 9 | Darrang | Mangaldai | 1,585 | 928,500 | 586 |
| 10 | Dhemaji | Dhemaji | 3,237 | 686,133 | 212 |
| 11 | Dhubri | Dhubri | 1,608 | 1,394,144 | 867 |
| 12 | Dibrugarh | Dibrugarh | 3,381 | 1,326,335 | 392 |
| 13 | Dima Hasao | Haflong | 4,890 | 214,102 | 44 |
| 14 | Goalpara | Goalpara | 1,824 | 1,008,183 | 553 |
| 15 | Golaghat | Golaghat | 3,502 | 1,066,888 | 305 |
| 16 | Hailakandi | Hailakandi | 1,327 | 659,296 | 497 |
| 17 | Hojai | Sankardev Nagar | 1,686 | 931,218 | 550 |
| 18 | Jorhat | Jorhat | 2,851 | 924,952 | 324 |
| 19 | Kamrup Metropolitan | Guwahati | 1,528 | 1,253,938 | 821 |
| 20 | Kamrup | Amingaon | 3,105 | 1,517,542 | 489 |
| 21 | Karbi Anglong | Diphu | 7,366 | 660,955 | 90 |
| 22 | Karimganj | Karimganj | 1,809 | 1,228,686 | 679 |
| 23 | Kokrajhar | Kokrajhar | 3,169 | 887,142 | 280 |
| 24 | Lakhimpur | North Lakhimpur | 2,277 | 1,042,137 | 458 |
| 25 | Majuli | Garamur | 880 | 167,304 | 190 |
| 26 | Morigaon | Morigaon | 1,704 | 957,423 | 562 |
| 27 | Nagaon | Nagaon | 3,973 | 2,823,768 | 711 |
| 28 | Nalbari | Nalbari | 2,257 | 771,639 | 342 |
| 29 | Sivasagar | Sivasagar | 2,668 | 679,632 | 255 |
| 30 | Sonitpur | Tezpur | 3,176 | 1,924,110 | 606 |
| 31 | South Salmara-Mankachar | Hatsingimari | 568 | 555,114 | 977 |
| 32 | Tamulpur | Tamulpur | 884 | 389,150 | 440 |
| 33 | Tinsukia | Tinsukia | 3,790 | 1,327,929 | 350 |
| 34 | Udalguri | Udalguri | 1,852 | 831,688 | 449 |
| 35 | West Karbi Anglong | Hamren | 3,035 | 295,358 | 97 |
