Retford is a market town in Nottinghamshire in the East Midlands of England, 31 miles (50 km) from Nottingham, and 23 miles (37 km) west of Lincoln. The population at the 2011 census was 22,013. The town is in the valley of the River Idle and the Chesterfield Canal passes through the centre. The village of Ordsall, west of the River Idle and the East Coast Main Line railway, and the former hamlet of Thrumpton are suburbs. Retford is administered by Bassetlaw District Council, which itself is now a non-constituent partner member of the Sheffield City Region Combined Authority. Retford is twinned with Pfungstadt, Germany.