DN31
Postcode districtPostcode district covering Grimsby and West Marsh, in North East Lincolnshire.
Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an DN31 postcode. How census figures are added up
Radon Affected Area by postcode district
Worked out by Open Index · 2022
About 0% of people in DN31 live in a 1 km square that the radon atlas marks as a radon Affected Area.
How DN31 compares
Each dot is a postcode district. The black line marks the middle one.
Is DN31 safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in DN31 at a rate of 416.1 per 1,000 people.
That compares with 116.1 per 1,000 people across the DN postcode area.
In August 2026 alone, 417 cases of crime and anti-social behaviour were recorded in DN31.
In the 12 months to August 2026, the most common types were violence and sexual offences (1,368), other crime (892) and shoplifting (842).
A year earlier, the recorded crime rate in DN31 was 365.5 per 1,000 people.
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.
Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.
Deprivation in DN31, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so DN31 has no single figure. Of its 6 neighbourhoods with a rank:
- Decile 1 (England’s most deprived 10%): 4 neighbourhoods
- Decile 2: 1 neighbourhood
- Decile 3: 1 neighbourhood
English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England.
Neighbourhoods in DN31
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| North East Lincolnshire 003A | 1,294 | 206.6 per 1,000 | 1 | 97.8% |
| North East Lincolnshire 003B | 1,470 | 169.2 per 1,000 | 2 | 98.8% |
| North East Lincolnshire 003C | 1,571 | 155.9 per 1,000 | 1 | 99.4% |
| North East Lincolnshire 003D | 1,677 | 1,314.9 per 1,000 | 1 | 65.0% |
| North East Lincolnshire 003E | 1,532 | 331.5 per 1,000 | 1 | 96.4% |
| North East Lincolnshire 008C | 1,534 | 104.9 per 1,000 | 3 | 100.0% |
MPs for DN31
- Melanie OnnLabourMP for Great Grimsby and Cleethorpes100% of DN31’s postcodes
- Martin VickersConservativeMP for Brigg and Immingham0.4% of DN31’s postcodes
As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.
Middle areas in DN311
Postcode sectors in DN314
Council1
Towns in DN311
Postcode districts next to DN315
Nearest rail stations4
More in the DN postcode area2
DN31 in brief
DN31 is a postcode district covering Grimsby and West Marsh, in North East Lincolnshire.
About 10,577 people lived in DN31 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £80,000 in 2025 across 113 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 416.1 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in DN31 was £80,000 in 2025.
DN31 had 9,938 usual residents at the census.
About 0% of people in DN31 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In DN31, 86.8% of homes and businesses could get gigabit-capable broadband in January 2026.