Haltwhistle is a town and civil parish in Northumberland, England, 10 miles (16 km) eastern of Brampton, near Hadrian's Wall. It had a population of 3,811 at the 2011 Census. Stone-built houses are an attribute of Haltwhistle. It is among 2 settlements in Great Britain which declare to be the specific geographical centre of the island, in addition to Dunsop Bridge in Lancashire, 71 miles (114 km) to the south. An electoral ward with the same name still exists. This ward stretches from Hexham southern up the R. South Tyne and has an overall population taken at the 2011 Census of 4,832. Haltwhistle was a market town for the exchange of local products. In the 18th century two Quakers set up a baize manufactury as well as there was a weaving establishment. On the Haltwhistle Burn were fulling mills, dyeing and spinning mills. A stroll along this stream to the Roman Wall, shows that it needs to have been a hive of industry with quarries, coal mining and lime burning kilns. The Directory of 1822 (Pigot) offers an entire range of craftsmen, storekeepers and traders-- 60 in number, including manufacturers of blockages. The weekly market was held on Thursdays and also there were fairs on 14 May as well as 22 November for livestock and sheep.