Teesside

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Teesside
Built-up area
The Tees Transporter Bridge
Built-up area's sub divisions
Coordinates: 54°35′20″N 1°11′15″W / 54.58889°N 1.18750°W / 54.58889; -1.18750
Sovereign state	United Kingdom
Country	England
Region	North East England
Ceremonial County	County Durham North Yorkshire
Sub divisions	Middlesbrough Stockton-on-Tees Redcar Billingham Thornaby Ingleby Barwick Wolviston High Clarence
County Borough of Teesside	1968–1974
Population
• Total	376,633[1]
• Rank	18th
Time zone	GMT (UTC)
• Summer (DST)	UTC+1 (BST)
Postcodes	TS1–8 & 10–27

Teesside (/ˈtiːsaɪd/) is a built-up area around the River Tees in North East England, split between County Durham and North Yorkshire. The area contains the towns of Middlesbrough, Stockton-on-Tees, Billingham, Redcar, Thornaby-on-Tees, and Ingleby Barwick. Teesside's economy was once dominated by heavy manufacturing until deindustrialisation in the latter half of the 20th century. Chemical production continues to contribute significantly to Teesside's economy.