Administrative (pop., 2001: 646,646), geographic, and historic county, eastern England.
It lies along the North Sea from the Humber estuary to the Wash. Among its most important towns is Lincoln . Inhabited in prehistoric times, it developed as an area of Roman settlement. Anglo-Saxons later established the kingdom of Lindsey. Danish influence was also widespread through villages established by Danes. Geographically isolated, it remains primarily an agricultural region. Along the coast, tourism has grown.