Karmahia is a village in Nichlaul tehsil in district of Mahrajganj, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Karmahia was 1,891 which includes 977 males and 914 females. Karmahia covers 387.86 ha area. Pincode of Karmahia is N/A.