This article examines the phenomenon of regional differentiation in fertility rates in Russia in the context of intensified state demographic policy. The aim of the study was to identify trends in the transformation of fertility patterns in real generations during the 2010—2020 intercensal period based on a new research approach to measuring regional differentiation in fertility rates in specific family cohorts: single-child, two-child, and multi-child families. The results of the study showed that the target indicators of the effectiveness of measures to support demographic development in Russian regions, as well as the convergence of regional models of childhood, can be not only the total fertility rate, but also statistically measurable indicators of regional differentiation of childhood in each group of families: single-child, two-child, and multi-child. During the period under review between the last two censuses, a trend towards convergence in childbearing patterns emerged: there was a sharp decline in the number of regions where the one-child model prevailed, and positive shifts were observed in the cohorts of Russian families with two or more children. This article can serve as a basis for forecasting regional fertility indicators and, most importantly, for assessing the necessary measures of regional socio-economic policy in the context of the implementation of the national project “Family”.
