Chesterfield is a town in Derbyshire, England. It is located on the River Rother and is known for its crooked spire, which is a landmark of the town. The population of CHESTERFIELD is around 70, 000 people. It is a market town and has a long history, with evidence of settlement dating back to Roman times. It is also home to many historic buildings, including the Church of St Mary and All Saints, which is known for its crooked spire.