Upper Sind Frontier District
The increase in 1901 was the largest. This was due to immigration from Baluchistan and the Punjab as well as a change in the borders of the district. According to the 1901 census, the main language was Sindhi. Sindhi was spoken by 165,110 people in 1901 (71 per cent). The Baluchi and Siraiki languages were also spoken in all parts of the District. Muslims formed 90 per cent of the total population and Hindus 9 per cent.