The TS postcode area, also known as the Cleveland postcode area, (or unofficially as the Teesside postcode area) comprises the postcode districts covering the post towns of Billingham, Guisborough, Hartlepool, Middlesbrough, Redcar, Saltburn-by-the-Sea, Stockton-on-Tees, Trimdon Station, Wingate and Yarm in north east England.