post-Partition impact on the rates of demographic growth has been particularly strong in all North Bengal districts. Despite its smaller relative size, the region has received more migration in pro rata terms than the West Bengal districts lying south of the Ganga." Literacy As per the 2011 census, the total number of literates in Kaliaganj CD Block was 129,417 (66.50% of the population over 6 years) out of which males numbered 74,657 (74.58% of the male population over 6 years) and females numbered 54,760 (57.96% of the female population over 6 years). The gender disparity (the difference between female and male literacy rates) was 16.62%. The literacy rate in Uttar Dinajpur district at 60.13% in 2011, up from 47.89% in 2001, was the lowest amongst all districts of West Bengal. The highest literacy rate amongst the districts of West Bengal was that of Purba Medinipur district at 87.66% in 2011. See also – List of West Bengal districts ranked by literacy rate Language and religion In the 2011 census, Hindus numbered 177,257 and formed 79.08% of the population in Kaliaganj CD Block. Muslims numbered 46,066 and formed 20.55% of the population. Christians numbered 646 and formed 0.29% of the population. Others numbered 173 and formed 0.08% of the population. In Kaliaganj CD Block, as per the District Statistical Handbook for Uttar Dinajpur, while the proportion of Muslims increased marginally from 20.47% in 1991 to 20.70% in 2001, the proportion of Hindus declined marginally from 79.34% in 1991 to 78.96% in 2001. In the 2011 census, Uttar Dinajpur district had 1,501,170 Muslims who formed 49.92% of the population, 1,482,943 Hindus who formed 49.31% of the population, 16,702 Christians who formed 0.56% of the population and 6,319 persons belonging to other religions who formed 0.23% of the population. While the proportion of Muslim population in the district increased from 45.3% in 1991 to 49.9% in 2011, the proportion of Hindu population declined from 54.2% in 1991 to 49.2% in 2011. At the time of the 2011 census, 93.00% of the population spoke Bengali, 3.16% Santali and 0.93% Sadri as their first language. Rural poverty As per the Rural Household Survey conducted in 2002, 35.4% of the rural families in Kaliaganj CD Block belonged to the BPL category, against 46.7% of rural families in Uttar Dinajpur district being in the BPL category. As per the Human Development Report for Uttar Dinajpur district, with