Corby is a town and civil parish in the North Northamptonshire unitary authority area of Northamptonshire, England. It is located 23 mi north-east of Northampton. From 1974 to 2021, the town served as the administrative headquarters of the Borough of Corby. At the 2011 Census, the built-up area had a population of 56,810, while the borough, which was abolished in 2021, had a population of 75,571 in 2021.