Kachnau is a village in Mahavan tehsil in district of Mathura, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Kachnau was 2,467 which includes 1,365 males and 1,102 females. Kachnau covers 331.34 ha area. Pincode of Kachnau is 281301.