Kolavennu is a village in Kankipadu tehsil in district of Krishna, Andhra Pradesh, India. As per the data provided by Census of India in 2011, total population of Kolavennu was 5,076 which includes 2,503 males and 2,573 females. Kolavennu covers 1230 ha area. Pincode of Kolavennu is 521151.