Threemilestone is a small village in the civil parish of Kenwyn, located precisely three miles west of Truro, the only city in Cornwall, England, United Kingdom. Threemilestone has grown in recent years, as housing estates to the west have been developed. Between Truro and Threemilestone there is a continuous line of schools, colleges and industrial estates, including Truro College and Richard Lander School. Furthermore the village also houses a primary school.