The parish traces its origins to the medieval period, making it one of the older ecclesiastical divisions in this part of Jämtland. Over the centuries its boundaries changed considerably, as neighbouring parishes were separated out to form independent communities: Rätans församling and Klövsjö församling both split away in the sixteenth century, followed later by Åsarne församling in the eighteenth century.
For much of its early history, Berg formed part of a wider pastoral grouping with neighbouring parishes, first as its own small pastorate, then combined administratively with Oviken, Myssjö and other congregations, before settling into a long-standing pairing with Rätan and Klövsjö from the mid-seventeenth century onwards. This pattern of shifting administrative unions continued into the twentieth and twenty-first centuries, with Berg eventually becoming part of Södra Jämtlands pastorat and, more recently, Sydöstra Jämtlands pastorat.
Today the parish contains two churches: Bergs kyrka, its principal place of worship, and Svenstakyrkan. Detailed architectural and historical information about these individual buildings is not covered by the sources used for this overview, so visitors interested in specific features, furnishings or building dates are encouraged to consult material on the churches themselves.
The parish's long administrative history, with its repeated divisions and re-groupings, reflects the wider pattern of rural church organisation in Jämtland, where sparse populations and large distances shaped how congregations were served and governed over the centuries.