Comprehensive anthropometrical examination of 225 schoolchildren of municipal educational institutions of the Surgut district was conducted. The aim of the work was assessment of physical development of high school students constantly living on the territory of Khanty-Mansi autonomous Okrug (KhMAO) - Ugra. Methods. The key anthropometrical indicators: body length and weight, chest circumference were registered according to standard research techniques. Body mass indices, proportionality index and somatotype were calculated to assess children's physical development. Results were analyzed by means of the standard methods of mathematical statistics. All the surveyed were divided into following groups: representatives of indigenous ethnic groups of the North (Khanty) who came for the educational period to boarding schools; metises of the first generation who had one of parents the Khanty's representative; descendants of the alien population. Each group was additionally divided by gender. Results. It was stated that the key anthropometrical indicators in metises had in-between position among experimental groups. Values of body length in metises were closer to those in descendants of the alien population, and body weight and chest circumference - to the indicators of representatives of indigenous ethnic groups of the North. According to body density indices, proportionality of body development and orientation of growth processes metises were more similar to the Khanty's school children. Conclusions. Possibly, adaptation of the alien population of KhMAO - Yugra to climatic factors happened through miscegenation with predominant inheritance of anthropometrical signs of indigenous ethnic groups of the North.