Angkor Thom is an administrative district of Siem Reap province, in north western Cambodia. According to the 1998 census of Cambodia, it ha…Angkor Thom is an administrative district of Siem Reap province, in north western Cambodia. According to the 1998 census of Cambodia, it had a population of 17,750. The archaeological site of Angkor Thom is not located in this district, but in Siem Reap Municipality.