The rhesus macaque (Macaca mulatta) is one of the best known species of old world monkeys. It is listed as least concern in the IUCN Red data book of Threatened species; in view of its wide distribution and presumed large of habitats. In the biological sense, population can be considered as an assemblage of plants or animals, which may belong to a single species or to several closely related species occupying a definite area. The study site Babupur Kaniyari village area and Kardmeshwer dham hill area were largest in forest habitat. They show a well marked home range of macaque with certain degree of defense mechanism. The census of 2014-2015 covering 4 troops and yielded 127 rhesus monkey; in 2014 this population increased to 137 with a net gain of 10 individuals in a troop. These four troops were belonged to two different ecosystems i.e. Troops BK1-BK2 belonged to village ecosystem and KD1-KD2 to protected hill ecosystem.