DN21 postcode district
DN21 holds 1,371 live postcodes around Gainsborough, in West Lindsey, North Lincolnshire, Bassetlaw.
Towns and villages with their centre in DN21
| # | Place | County / council | Population |
|---|---|---|---|
| 1 | Gainsborough | Lincolnshire | 20,537 |
| 2 | Willingham | Lincolnshire | 3,513 |
| 3 | Kirton in Lindsey | North Lincolnshire | 2,873 |
| 4 | Scotter | Lincolnshire | 2,865 |
| 5 | Northorpe | Lincolnshire | 2,184 |
| 6 | Blyton | Lincolnshire | 1,162 |
| 7 | Waddingham | Lincolnshire | 601 |
| 8 | Corringham | Lincolnshire | 523 |
| 9 | Laughton | Lincolnshire | 410 |
| 10 | Redbourne | North Lincolnshire | 400 |
| 11 | Hemswell | Lincolnshire | 391 |
| 12 | Willoughton | Lincolnshire | 341 |
And 3 smaller places.
Wards
| Name | Share of postcodes |
|---|---|
| Scotter and Blyton | 20% |
| Gainsborough South-West | 16% |
| Gainsborough East | 14% |
| Gainsborough North | 14% |
| Ridge | 11% |
| Hemswell | 10% |
| Lea | 6% |
| Waddingham and Spital | 5% |
| Torksey | 2% |
| Stow | 2% |
And 2 more.
Westminster constituencies
| Name | Share of postcodes |
|---|---|
| Gainsborough | 89% |
| Scunthorpe | 11% |
| Bassetlaw | 0% |
Deprivation
The middle postcode here sits in decile 4 of the English Index of Multiple Deprivation (2021-Census LSOAs), where decile 1 is the most deprived tenth of neighbourhoods and 10 the least. 45% of this district's postcodes sit in the most deprived three deciles, 7% in the least deprived three.
Deprivation deciles describe the LSOA neighbourhood each postcode sits in, weighted by postcodes rather than by people, because the postcode file carries no population. A district where the deprived neighbourhoods are densely populated will read better here than it would per resident.
Neighbouring districts in the DN area
DN1 · DN2 · DN3 · DN4 · DN5 · DN6 · DN7 · DN8 · DN9 · DN10 · DN11 · DN12 · DN14 · DN15 · DN16 · DN17 · DN18 · DN19 · DN20 · DN22 · DN31 · DN32 · DN33 · DN34 · DN35 · DN36 · DN37 · DN38 · DN39 · DN40 · DN41
Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v3.0. Postcode data is the ONS Postcode Directory, August 2026 edition; counts are live postcodes with a usable location. Northern Ireland postcodes carry a separate licence and are not included; Scotland joins when the site's Scottish coverage does.