Darlington is a historic market town in County Durham, North-East England.
It is also the major settlement in the unitary authority and Borough of Darlington, with a resident population of 106,000 as of 2011. The town lies on the small River Skerne, a tributary of the River Tees, not far from the main river.
The town owes much of its development to the influence of local Quaker families during the Victorian era, and it is famous as the terminus of the world's first steam hauled passenger railway. Darlington railway station is an important stop on the East Coast Main Line.