Chesterfield is a market town and borough in the county of Derbyshire in the East Midlands of England. It is on the River Rother and the River Hipper. It is Derbyshire's largest town (Derby is a city).
It is a very old town and was founded between 70–100 AD. The town received its market charter from King John in 1204.
It is 24 miles (39 km) north of Derby and 11 miles (18 km) south of Sheffield.