Thummanatti is a village in Udhagamandalam tehsil in district of The Nilgiris, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Thummanatti was 9,461 which includes 4,539 males and 4,922 females. Thummanatti covers 2094.18 ha area. Pincode of Thummanatti is 643002.