It shares the park with North Sikkim district .
In 1977 West Sikkim district became home to Khangchendzonga National Park , which has an area of 1,784 km ( 688.8 sq mi ) .
West Sikkim shares the park with North Sikkim district .
In 1977 West Sikkim district became home to Khangchendzonga National Park , which has an area of 1,784 km ( 688.8 sq mi ) .