Rugby is a market town in eastern Warwickshire, England, close to the River Avon. At the 2021 census, its population was 78,117, making it …Rugby is a market town in eastern Warwickshire, England, close to the River Avon. At the 2021 census, its population was 78,117, making it the second-largest town in Warwickshire. It is the main settlement within the larger Borough of Rugby, which had a population of 114,400 in 2021.