Lalapettai is a village in Wallajah tehsil in district of Vellore, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Lalapettai was 4,264 which includes 2,110 males and 2,154 females. Lalapettai covers 104.67 ha area. Pincode of Lalapettai is 632405.