The Reformed Religion was brought into Transylvania in 1550 and
swiftly adopted by a part of the Hungarian nobility and the urban patriciate. In
the inter-war period, after the Greater Union of all the Romanian Provinces on
December 1, 1918 the Reformed Church had two Episcopates: the Episcopate
of Transylvania and „Piatra Craiului? Episcopate. Major changes in the
numerical evolution and territorial distribution of the Reformed Romanian
populations were the following: a) a decrease from 710,706 faithful in 1930, to
701,077 in 2002 and to 600,932 in 2011– as a consequence of the general
negative natural balance in Romania (ever fewer births) and emigration (mostly
after 2007) after the country?s adherence to the European Union.; b) changes
in the distribution of the Calvinist faithful by habitat, from 21 % in the town
area of 1930 to some 53 % in 2002, and 50.5% to-day.