Udaiyalur is a village in Kumbakonam tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Udaiyalur was 3,156 which includes 1,582 males and 1,574 females. Udaiyalur covers 485.07 ha area. Pincode of Udaiyalur is 612804.