The Emsigerland was based on a historic territorial parish (Landesgemeinde), the Emsgau, and formed its economic centre.
In 1978, diocesan authorities announced that the territorial parish of Annunciation would be consolidated.
In 2007 there are ten bishops, and 105,000 baptized members in 110 territorial parishes.
In 2002, the parish changed from being a "regular" territorial parish to being a national parish for the Vietnamese population.
For Roman Catholicism, the key was the territorial parish, which grouped communicants into communities by telling them where they had to worship.
Fontes is the largest territorial parish in the municipality, located eight kilometres north of the municipal seat.
In 1733, the First Parish in Cambridge moved away from its close governmental role and separately organized itself as a territorial parish.
Since then, the parish has been a poll parish, rather than a territorial parish.
In the 1980s OLG became a territorial parish, and it adopted geographic boundaries.
Most parishes are territorial parishes, which comprise all Catholics living within a defined geographic area.