Northallerton is a market town and civil parish in the Hambleton district of North Yorkshire, England. It lies in the Vale of Mowbray and at the northern end of the Vale of York. It has a population of 15,741 according to the 2001 census. It has served as the county town of the North Riding of Yorkshire and since 1974, of North Yorkshire. The population of Northallerton was 16,832 in 2011.