Rehra Kala is a village in Itwa tehsil in district of Siddharthnagar, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Rehra Kala was 363 which includes 161 males and 202 females. Rehra Kala covers 52.22 ha area. Pincode of Rehra Kala is N/A.