Kalaroa Upazila  Kalaroa () is an upazila of Satkhira District in the Division of Khulna, Bangladesh,Kolaroa Upazila Was Established in 1983, 18 km Distance From District Headquarters, Kolaroa Bazar is one of the Prosperous and Successful Business Places in Satkhira District,  Kalaroa is located at . It has 35,475 households and a total area of 232.64 km². Kalaroa borders Sharsha, Jhikargachha and Manirampur upazilas to the north, Satkhira Sadar and Tala upazilas to the south, Keshabpur, Manirampur and Tala upazilas and the Kobadak river to the east and Swarupnagar CD Block in North 24 Parganas district in the Indian state of West Bengal to the west. The main rivers are the Kopothakho, Betraboti, Sonai, and Ichamati. Lohakura, Kumarnal, Murari Katy, Gonopatipur, Sonabaria, Kushudanga, Tulshidanga, Batra, Sreerampur, Bujtola, Kazirhat, Khorda, Saraskati and Chandanpur are the most famous villages in Kalaroa. According to the 2011 Bangladesh census, Kalaroa had a population of 237,992. Males constituted 49.08% of the population and females 50.92%. Muslims formed 93.89% of the population, Hindus 5.19%, Christians 0.76% and others 0.15%. Kalaroa had a literacy rate of 50.94% for the population 7 years and above. According to the 1991 Bangladesh census, Kalaroa had a population of 190,721. Males constituted 50.96% of the population, and females 49.04%. The population aged 18 or over was 97,044. Kalaroa had an average literacy rate of 25.6% (7+ years), compared to the national average of 32.4%. Cultural organisations include 41 clubs, five public libraries, a public institute, three cinema halls, 12 women's organisations, 27 playgrounds and a kishore theatre. The locally published newspapers and periodicals are Pathikrit, Samatat, Suryashikha, Subarna Prasun and Dalchhut. Religious institutions include 405 mosques, eight temples and three churches.