Semmandapatti is a village in Omalur tehsil in district of Salem, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Semmandapatti was 7,618 which includes 4,039 males and 3,579 females. Semmandapatti covers 992.78 ha area. Pincode of Semmandapatti is 636309.