Population
thumb|right|270px|Aerial view of settlement around Sadarghat Bridge over the [[Barak River in Silchar]]
According to the 2011 census, Cachar district has a population of 1,736,617. It ranks 278th out of a total of 640 districts in India.
{| class="wikitable"
|+Population of circles by religion
!Circle
!Hindus (%)
!Muslims (%)
!Christians (%)
!Others (%)
|-
|Katigorah
|45.00
| style="background:green;color:white" |53.55
|1.32
|0.13
|-
|Silchar
| style="background:darkorange" |72.19
|26.42
|1.00
|0.39
|-
|Udarbond
| style="background:darkorange" |70.45
|26.05
|3.13
|0.37
|-
|Sonai
|41.17
| style="background:green;color:white" |56.92
|1.76
|0.15
|-
|Lakhipur
| style="background:darkorange" |61.04
|32.71
|5.87
|0.38
|}