Originally, the Nordre Fosen prosti included the parishes of Bjørnør, Åfjord, Bjugn, and Stadsbygd while Søndre Fosen prosti included the parishes of Frøya, Hitra, Hemne, Agdenes, and Ørland.
[2] On 1 January 1972, the parish of Ørland Municipality was transferred to this deanery from the Sør-Fosen prosti.
This deanery (Norwegian: prosti) covers the Gauldalen valley and surrounding areas in southern Trøndelag county.
It includes the parishes in the municipalities of Holtålen, Melhus, Midtre Gauldal, Oppdal, Rennebu, and Røros.
This deanery (Norwegian: prosti) covers the southern and western areas of Trondheim Municipality.
[4] This deanery (Norwegian: prosti) covers the vast northern part of Trøndelag county, covering the municipalities of Lierne, Røyrvik, Namsskogan, Grong, Høylandet, Overhalla, Namsos, Flatanger, Nærøysund, and Leka.
This deanery (Norwegian: prosti) covers the southwestern coastal part of Trøndelag county.
The deanery covers the municipalities of Frøya, Heim, Hitra, Orkland, Skaun and Rindal.
The deanery is headquartered at Orkdal Church in the village of Fannrem in Orkland Municipality.
This deanery (Norwegian: prosti) covers the Innherad district in central Trøndelag county.
The deanery includes the municipalities of Snåsa, Steinkjer, Inderøy, Verdal, Levanger, and Frosta.
[6] This deanery (Norwegian: prosti) covers the traditional district of Stjørdalen in eastern Trøndelag county.
The deanery includes the parishes in the municipalities of Stjørdal, Meråker, Malvik, Selbu, and Tydal.
The deanery is headquartered at Værnes Church in the village of Prestmoen, just south of Stjørdalshalsen in Stjørdal Municipality.
This deanery (Norwegian: prosti) covers the eastern part of Trondheim Municipality; containing a total of five parishes.