Spilsby is a market town, civil parish and electoral ward in the East Lindsey district of Lincolnshire, England. The town is adjacent to the main A16, 33 miles (53 km) east of the county town of Lincoln, 17 miles (27 km) north-east of Boston and 13 miles (21 km) north-west of Skegness. It lies at the southern edge of the Lincolnshire Wolds and north of the Fenlands, and is surrounded by scenic walking, nature reserves and other places to visit.
The town has been a rural market town for more than 700 years. It has changed little in size since the beginning of the 19th century. The town centre includes a range of small supermarkets, banks, traditional newsagents, baker, butchers, jewellers and clothing stores, together with public houses, cafes and fast-food takeaways.
At the centre of town is an open square or traditional market place, from which the four main town streets radiate. Markets take place on a Monday. As Spilsby is located within a predominantly agricultural area, much of the market produce consists of locally grown vegetables and meat.
The population of the town was 2,336 in the 2001 census, increasing to 3,045 at the 2011 Census.