Corby was a non-metropolitan district with borough status in the county of Northamptonshire, England. It bordered the East Northamptonshire district to the east, the Borough of Kettering to the south and west, the Harborough district of Leicestershire to the north-west, and the county of Rutland to the north-east. In 2021 the district had a population of 75,571. The council, Corby Borough Council was based at the Cube in the town of Corby.

Northamptonshire is a ceremonial county in the East Midlands of England. It is bordered by Leicestershire, Rutland and Lincolnshire to the north, Cambridgeshire to the east, Bedfordshire, Buckinghamshire, Oxfordshire to the south and Warwickshire to the west. Northampton is the largest settlement and the county town.