Neponset is a village in Bureau County, Illinois, United States. The population was 519 at the 2000 census. It is part of the Ottawa–Streator Micropolitan Statistical Area.
Neponset has one gas station that was built within the last decade. The residents are very pleased with this since they no longer need to go to the nearby town of Kewanee for gas and items of convenience. It should be noted, however, that this is a major portion of the Business District. Also this is the headquarters for Martin Engineering, Lindbeck Auto Sales and Mike's Barbershop (Mike has been cutting hair for over sixty years and has never raised the price of his cuts which is $1.75).
Founded in 1944, Martin Engineering is the world leader in making bulk materials handling cleaner, safer and more productive. The firm is headquartered in Neponset, IL, with global reach from operations in Brazil, China, France, Germany, Indonesia, Mexico, South Africa, Turkey, India, and the UK.