is a panchayat town
in Erode district
in the state of Tamil Nadu
Ammapettai is located at . It has an average elevation of 1 metre
As of 2001
, Ammapettai had a population of 8991. Males constitute 51% of the population and females 49%. Ammapettai has an average literacy rate of 54%, lower than the national average of 59.5%; with 60% of the males and 40% of females literate. 10% of the population is under 6 years of age.
Ammapettai lies on the banks of the Kaveri river,and the arterial road connecting Erode and Mettur passes through the heart of the village.