LOUTH, a market-town of the county of Lincoln, in the hundred of Louth Eske, in Lindsay division. It is 144 miles from London, being situated on the river Lud, from which a canal has been constructed, communicating with the sea, about seven miles distant. It has a considerable coasting trade, and good markets on Wednesdays and Saturdays. It is governed by a corporate body, composed of a warden and six assistants. The population amounted in 1801 to 4236, in 1811 to 4728, in 1821 to 6012, and in 1831 to 6927.