Achalgarh is a village in Nautanwa tehsil in district of Mahrajganj, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Achalgarh was 1,735 which includes 916 males and 819 females. Achalgarh covers 116.05 ha area. Pincode of Achalgarh is 273162.