Ivolginsk is a rural locality located in Russia. It serves as the administrative center of the Ivolginsky District within the Republic of Buryatia.
According to census data, the population of the settlement has fluctuated over recent decades. The 2010 census recorded a population of 7,382, following a count of 7,241 in 2002 and 5,980 during the 1989 Soviet census.