Alnwick is a market town in Northumberland, England, of which it is the traditional county town. The population at the 2011 Census was 8,116. The town is on the south bank of the River Aln, 32 miles south of Berwick-upon-Tweed and the Scottish border, 5 miles inland from the North Sea at Alnmouth and 34 miles north of Newcastle upon Tyne. The town dates to about AD 600 and thrived as an agricultural centre.