Horncastle is an English market community and also civil parish in Lincolnshire, 17 miles (27 kilometres) east of the county town of Lincoln. It had a population of 6,815 according to the 2011 Census. An area of the ancient Roman wall surfaces continues to be. Lincolnshire Integrated Voluntary Emergency Service is based at the Boston Road Industrial Estate. The Lincolnshire Wildlife Trust is based in Banovallum House. Mortons of Horncastle is a major nationwide magazine publisher of timeless bikes, aviation as well as road transport heritage titles, situated in the south of the community on the industrial estate off the A153 (Boston Road). Because the late 20th century, the populace has actually raised to 6,815 in 2011, its greatest ever before. Historically, the civil parish suffered a decrease in population from the mid-19th to mid-20th century, as urbanisation and also adjustments in farming attracted individuals to cities where more job was offered.