Chynoweth is an area immediately north of St Hilary churchtown. The land of the parish is high enough to provide views of bays on both coasts--St. Ives Bay five miles north and Mount's Bay two miles south.
During the height of mining activity the population was three times that in the 1930s. The population of the parish was 785 in the UK census of 2001. The area has many former mines: especially notable was a mine called Wheal Fortune which extended into the parish of Ludgvan. An earthquake occurred in St. Hilary in 1796.
The parish church is dedicated to Saint Hilary of Poitiers and is in the Early English style but had to be rebuilt after a fire in 1853. It has a 13th-century tower and is a Grade I listed building.
St. Hilary was part of the West Penwith Rural District from 1894 until 1974.
One of the many maps available on A Vision of Britain through Time is one from the Ordnance Survey Series of 1900 illustrating the parish boundaries of Cornwall at the turn of the 20th century. This map blows up to show all the parishes and many of the small villages and hamlets.
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