Krishnankottagam is a village in Kodavasal tehsil in district of Thiruvarur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Krishnankottagam was 911 which includes 469 males and 442 females. Krishnankottagam covers 343.61 ha area. Pincode of Krishnankottagam is 613703.