Valaiyur is a village in Manachanallur tehsil in district of Tiruchirappalli, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Valaiyur was 3,916 which includes 1,915 males and 2,001 females. Valaiyur covers 1148.46 ha area. Pincode of Valaiyur is 621005.