The bishops of the Russian Orthodox Church, like military and civil servants in late imperial Russia, underwent significant “aging,” with the median age rising substantially as a result of greater life expectancy. In contrast to existing scholarship, which advances a political explanation for staffing in the episcopate (above all, the high rate of turnover and transfers), this study seeks to show that demography and the service structure were the key factors. Rather than rely on the politicized memoir literature, this analysis is based on the diary of the presiding member of the Synod, which focuses on the rationale and problems in staffing the episcopate. Significantly, the diocesan bishops were not only overaged but overtasked, finding it ever more difficult to perform traditional, let alone, additional roles. All this provides a new perspective on the Church’s capacity to address the growing social and confessional challenges in late imperial Russia.