Sherborne is a market town in northwest Dorset, in South West England. It is sited on the River Yeo, on the edge of the Blackmore Vale, east of Yeovil. The A30 road, which connects London to Penzance, runs through the town. In the 2011 census the population of Sherborne parish and the two electoral wards was 9,523. 28.7% of the population is aged 65 or older.