DN21 4ND North Lincolnshire
Live postcode, introduced January 1980. Ward: Ridge. Region: Yorkshire and The Humber.
Streets
- Sunny Hill, Kirton in Lindsey: 6 addresses
- Unicorn Row, Kirton in Lindsey: 1 address
Council tax
What each band costs in North Lincolnshire in 2026-27: Band D £2,348 a year on average, including the police, fire and any county and parish charges.
| A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|
| £1,566 | £1,827 | £2,088 | £2,348 | £2,870 | £3,392 | £3,914 | £4,697 |
Homes by band in the neighbourhood around this postcode: most are in band C (31% of about 1,060 homes).
Planning and heritage
- Conservation area: yes, Kirton in Lindsey Conservation area. Extensions, demolition, some windows and doors, and work on trees need consent.
- Listed buildings within 100 m of this postcode: 6.
- Article 4 direction (removing permitted development rights): Kirton in Lindsey.
- Tree preservation orders: 1 protected tree within 100 m of this postcode.
- Green belt: no.
Listed buildings
- 27, HIGH STREET, grade II
- 29, HIGH STREET, grade II
- COBB HALL, grade II
- OLD POLICE STATION, grade II
- THE PRIORY, grade II
- WHIPPING POST APPROXIMATELY 8 METRES SOUTH OF NO 1 SPA HILL (THE OLD POLICE STATION), grade II
Brownfield land registered for housing within 1.0 km
- Gleadells Mill, Station Road, Kirton in Lindsey, not permissioned (760 m)
Flood risk
No address in this postcode is in an area at high, medium or low risk of flooding from rivers, the sea or surface water. The rest are in areas at very low risk: less than a 0.1% (1 in 1,000) chance a year.
Rivers and the sea alone: no home is in an area at risk.
High: 3.3% (1 in 30) or more chance of flooding a year. Medium: 1% to 3.3%. Low: 0.1% to 1%. Very low: under 0.1%. The rivers and sea figures allow for flood defences. Counts cover whole postcodes, which can include other streets.
Flood zone for planning: no postcode centre is in flood zone 2 or 3.
Broadband
Superfast 100%, ultrafast 100%, gigabit 100% of premises; 0% cannot get 10 Mbit/s. Ofcom Connected Nations, data as at January 2026.
The full dossier for this postcode's main street is on Sunny Hill.