Chesterfield is a market town and a Borough status in the United Kingdom of Derbyshire, England. It lies north of the city of Derby, on a confluence of the rivers River Rother, South Yorkshire and River Hipper. Including Staveley, Derbyshire, the population (2001) is 100,879, although that of the town itself is 70,260. It is Derbyshire's largest town (the larger Derby being a city), although the county town of Derbyshire is Matlock, Derbyshire in the Derbyshire Dales.
Around 250,000 people live in the Chesterfield urban area including Dronfield, Bolsover, Staveley, Derbyshire, Shirebrook and Clay Cross. It is located on the A61 road, from the M1 motorway and forms part of the Sheffield City Region.