According to the 2011 census West Sikkim district has a population of 136,299, roughly equal to the nation of Grenada. This gives it a ranking of 608th in India (out of a total of 640). The district has a population density of . Its population growth rate over the decade 2001-2011 was 10.58%. West Sikkim has a sex ratio of 941 females for every 1000 males, and a literacy rate of 78.69%.