Wisbech is a market town, inland port and civil parish in the Fenland district in Cambridgeshire, England. In 2011 it had a population of 31,…Wisbech is a market town, inland port and civil parish in the Fenland district in Cambridgeshire, England. In 2011 it had a population of 31,573. The town lies in the far north-east of Cambridgeshire, bordering Norfolk and only 5 miles south of Lincolnshire. The tidal River Nene running through the town is spanned by two road bridges. Wisbech is in the Isle of Ely and has been described as "the Capital of The Fens".