Illogan is a village and civil parish in west Cornwall, England, United Kingdom, two miles (3 km) northwest of Redruth. The population of Illogan was 5,404 at the 2011 census. In the same year the population of the Camborne-Redruth urban area, which also includes Carn Brea, Illogan and several satellite villages, stood at 55,400 making it the largest conurbation in Cornwall. Originally a rural area supporting itself by farming and agriculture, Illogan shared in the general leap into prosperity brought about by the mining boom, which was experienced by the whole Camborne-Redruth area.

Cornwall is a ceremonial county in South West England. It is recognised by Cornish and Celtic political groups as one of the Celtic nations, and is the homeland of the Cornish people. The county is bordered by the Atlantic Ocean to the north and west, Devon to the east, and the English Channel to the south. The largest settlement is Falmouth, and the county town is the city of Truro.