Mannarsamudram is a village in Thiruvaiyaru tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Mannarsamudram was 1,795 which includes 905 males and 890 females. Mannarsamudram covers 210.85 ha area. Pincode of Mannarsamudram is 613101.