Alsa Gerya is a village in Keshpur tehsil in district of Paschim Medinipur, West Bengal, India. As per the data provided by Census of India in 2011, total population of Alsa Gerya was 83 which includes 47 males and 36 females. Alsa Gerya covers 8.93 ha area. Pincode of Alsa Gerya is 721156.