The area of Kalsia was 497 km² (168 sq mi), consisting of 20 detached pieces of territory in the Ambala and Ferozepore districts, lying mainly between 30° 12 and 30° 25 N and 77° 21 and 77° 35 E. It was divided into 3 major parts: two tehsils, Chhachhrauli and Basi, and a sub-tehsil named Chirak, in Ferozepur district.