Yarm      About your Area   Yarm Yarm shown within North Yorkshire Population 8,700 (2001 census) OS grid reference NZ416124 Unitary authority Stockton-on-Tees Ceremonial county North Yorkshire Region North East Constituent country England Sovereign state United Kingdom Post town YARM Postcode district TS15 Dialling code 01642 Police Cleveland Fire Cleveland Ambulance North East European Parliament North East England UK Parliament Stockton