Kelavannipet is a village in Orathanadu tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Kelavannipet was 2,010 which includes 976 males and 1,034 females. Kelavannipet covers 628.06 ha area. Pincode of Kelavannipet is 614632.