The article is devoted to the analysis of the absolute number and proportion of clergy representatives dynamics in Barnaul population in the XIX century. The study is based on clerical sheets and confession records of Barnaul as well as administrative population registration data. The author has come to a conclusion that over the study period the absolute values of the church statistics have increased 2.5 times, while the administrative ones — 6.5 times. The difference of indicators observed mainly towards the end of the XIX century, can be explained by the fact that the administration took into consideration the clergy of different denominations, not only of the Orthodox church. The proportion of the clergy in the population increased by mid-1860, then there was a tendency of decrease of indicators until the early 1880s. It was the result of the law adopted on 26 May, 1869, by which the children of the clergy were not considered as belonging to the clergy. On the basis of clerical sheets and confession records we might assume that the proportion of the clergy in the population began to decline in Barnaul by the end of the XIX century. The work seems very important because very little consideration was given to church sources in the previous research.