Matlock is the county town of Derbyshire, England. It is situated at the south eastern edge of the Peak District. The town is twinned with the French town Eaubonne. The former spa resort Matlock Bath lies immediately south of the town on the A6. Matlock, as a town, has a population of 10,689. The population of the wider Matlock urban area is approximately 20,000 (including Darley Dale, Tansley, Hackney and Matlock Bath). The Matlock area is considered to include Wirksworth, owing to the close proximity of the towns. This would bring the area's population closer to 30,000.Matlock is nine miles (14 km) south-west of Chesterfield, and in easy reach of the cities of Derby (19 miles), Sheffield (20 miles), and Nottingham (29 miles); the Greater Manchester conurbation is 30 miles away. Matlock, in west Derbyshire, is within the Derbyshire Dales which includes the towns of Bakewell and Ashbourne, as well as Wirksworth. The headquarters of the Derbyshire County Council are contained within it.