Kempston is a town and civil parish located in Bedfordshire, England. Once known as the largest village in England, Kempston is now a town with its own town council. It has a population of about 20,000, and together with Bedford, it forms an urban area with around 100,000 inhabitants, which is the sole significant urban area in the Borough of Bedford. Kempston serves principally as a dormitory town for Bedford.