There is a detailed statistical information on religious organizations in Ukraine during the period from 2008 to 2013 on IRS (Institute for Religious Freedom) website. Lets use it and look at regional differences in the increase (or decrease) in the number two largest orthodox communities – Ukrainian Orthodox Church (Moscow Patriarchate) and Ukrainian Orthodox Church of the Kyivan Patriarchate in those five years.
Number of communities of Ukrainian Orthodox Church (Moscow Patriarchate) increased mainly in the east and, though less evenly, in the center of the country (Kirovohrad Oblast and Kyiv are noticeable here). The relatively rapid growth of communities in Ivano-Frankivsk Oblast in absolute terms is the increase only from 28 to 35 communities.
Similarly is on the map of the UOC-KP: an increase of 33.3% in the Luhansk Oblast means increasing only from 21 to 28 communities, in Zakarpattia Oblast – from 26 to 36, Kharkiv Oblast – from 14 to 17, and in Sevastopol – from 1 to 2.
Lets take a look at the ratio of these two religious communities in different regions. Communities of UOC (MP) dominate everywhere, except Galicia. Moreover, map shows a clear polarization, nowhere we can see approximately equal number of communities. A certain church dominates either totally or by two thirds.
Total number of communities of UOC (MP) is almost three times higher than the number of communities of UOC-KP. Growth dynamics in Kiev Patriarchate was higher during years 2008-2013 (14.5% versus 11.4% in the UOC (MP)), but in absolute numbers the number of communities of UOC (Moscow Patriarchate) has grown much more (1252 new community versus 573 in UOC-KP).
Ukrainian Orthodox Church (Moscow Patriarchate) is the largest religious institution in Ukraine with the largest number of communities in all regions, except Galicia.