It's called India throughout the novel, which is accurate because during the time period of the novel it was part of India. But the area where it is taking place is today part of Pakistan (knowledge gained from watching a documentary on HBO about the India/Pakistan border being one of the most volatile and potentially dangerous borders in the world.)

From Wiki:

Relations between India and Pakistan have been strained by a number of historical and political issues, and are defined by the violent partition of British India in 1947 {...}

After the dissolution of the British Raj in 1947, two new sovereign nations were formed—the Union of India and the Dominion of Pakistan. The subsequent partition of the former British India displaced up to 12.5 million people, with estimates of loss of life varying from several hundred thousand to a million.[1] India emerged as a secular nation with a Hindu majority population and a large Muslim minority while Pakistan was established as an Islamic republic with an overwhelming Muslim majority population.