Kasar Kolvan is a village in Sangameshwar tehsil in district of Ratnagiri, Maharashtra, India. As per the data provided by Census of India in 2011, total population of Kasar Kolvan was 618 which includes 265 males and 353 females. Kasar Kolvan covers 518.7 ha area. Pincode of Kasar Kolvan is N/A.