Kumas Jatan is a village in Lachhmangarh tehsil in district of Sikar, Rajasthan, India. As per the data provided by Census of India in 2011, total population of Kumas Jatan was 639 which includes 324 males and 315 females. Kumas Jatan covers 404 ha area. Pincode of Kumas Jatan is 332311.