DN40 is in the county of Lincolnshire. It contains the town of Immingham, as well as East Halton, Habrough, South Killingholme, and North Killingholme. DN40 is 16km south-east of the city of Kingston upon Hull. DN40 is a postcode district, also known as an outcode or outbound code.
The below map shows where DN40 is, and the boundary of the DN40 postcode district:
Postal Boundaries © GEOLYTIX copyright and database right 2012
DN40 is in the county of Lincolnshire.
| Immingham | Town |
| East Halton | Village |
| Habrough | Village |
| South Killingholme | Village |
| North Killingholme | Village |
Position of DN40 relative to nearby towns. Distance is measured from the centre of DN40 to the centre of the town.
Position of DN40 relative to nearby cities. Distance is measured from the centre of DN40 to the centre of the city.