migrants from across the international border, a sizeable number of migrant Muslims have also settled in the district, mainly driven by economic reasons… migrants from other states comprised 23% of the total migrants residing in Uttar Dinajpur." The large number of migrants from other states is mainly from the neighbouring areas in Bihar. A study by North Bengal University has observed that "Immigrants from East Pakistan/Bangladesh have arrived in Uttar Dinajpur in almost equal numbers before and after 1971." The Human Development Report opines, "The overall 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 Raiganj CD Block was 234,192 (63.52% of the population over 6 years) out of which males numbered 133,461 (70.23% of the male population over 6 years) and females numbered 100,731 (56.37% of the female population over 6 years). The gender disparity (the difference between female and male literacy rates) was 13.86%. 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 280,214 and formed 65.13% of the population in Raiganj CD Block. Muslims numbered 146,871 and formed 34.14% of the population. Christians numbered 2,075 and formed 0.48% of the population. Others numbered 1,061 and formed 0.25% of the population. In Raiganj CD Block, as per the District Statistical Handbook for Uttar Dinajpur, while the proportion of Muslims increased from 31.08% in 1991 to 32.78% in 2001, the proportion of Hindus declined from 68.45% in 1991 to 66.43% 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