Grantham (/ˈɡrænθəm/) is a market and industrial town in the South Kesteven district of Lincolnshire, England, situated on the banks of the River Witham and bounded to the west by the A1 road. It lies some 23 miles (37 km) south of the Lincoln and 22 miles (35 km) east of Nottingham. The population in 2016 was put at 44,580. The town is the largest settlement and the administrative centre of South Kesteven District.