Arzgir is a rural locality located in Russia. It serves as the administrative center of the Arzgirsky District within the Stavropol Krai region.
According to census data, the population of the settlement has remained relatively stable over recent decades. The 2010 census recorded a population of 14,722, following figures of 15,559 in 2002 and 15,307 during the 1989 Soviet census.