Onakkoor is a village in Muvattupuzha tehsil in district of Ernakulam, Kerala, India. As per the data provided by Census of India in 2011, total population of Onakkoor was 12,421 which includes 6,203 males and 6,218 females. Onakkoor covers 2187 ha area. Pincode of Onakkoor is 686667.