Kenwyn is situated in the Deanery and Hundred of Powder. It is bounded on the North by St Allen, on the East by St Clements, the parish of St Marys Truro and the River Fal, on the South by Kea, and on the West by St Agnes, the detached part of Kea called Tregavethan, and Perranzabuloe. This parish stretches North-West from Truro, Kenwyn church being on the outskirts of the city. A considerable part of the City of Truro was in this parish. Kenwyn is regarded as a suburb of the City of Truro. During the 19th century, many parish boundaries changed because of the moving centres of population; many parts of Kenwyn were redefined as separate parishes. Chacewater chapelry was removed from this parish in 1837 when it became the centre of the new parish of its own. The modern parish of Mithian, was also created from part of Kenwyn in 1847. The Truro Railway Station is in Kenwyn parish. Kenwyn also contains the villages of Shortlanesend and Idless. The ecclesiastical parish of St Allen united with Kenwyn on 1 July 1991 by an Order in Council.