Based on the population census and archival materials, the article examines the confessional diversity of the Saratov Volga region in the late 1920s – early 1940s. Orthodoxy prevailed in this territory, however, a characteristic feature of regional life has always been polyconfessionalism, due to historical and geopolitical factors. In the article, the author characterizes the confessional space of the Saratov Volga region and gives a quantitative ratio of various confessions.