DN31 postcode district: Grimsby and around, North East Lincolnshire

DN31 is a postcode district in England, with 458 postcodes in use in 4 sectors. It has postcodes in Grimsby and Immingham. Its council is North East Lincolnshire.

Postcodes in use
458
Sectors
4
Council
North East Lincolnshire
Places
2 places

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in DN31, by flood risk

Map of every postcode in DN31, by flood risk Of the 458 postcodes in DN31 that ONS places, 16 have a home or business at high risk, 40 are at medium risk at worst, 136 are at low risk at worst, 187 are at very low risk only and 79 are not on the Environment Agency's at-risk list. 3 groups of postcodes at high or medium risk are outlined: 14 postcodes at high or medium risk; 14 postcodes at high or medium risk; 5 postcodes at high or medium risk. 2 postcodes lie beyond the edge and are listed under the map. Places named: West Marsh, East Marsh. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A16 DN31 1DA: not on the flood risk listDN31 1DG: not on the flood risk listDN31 1DL: not on the flood risk listDN31 1DP: not on the flood risk listDN31 1DT: not on the flood risk listDN31 1EB: not on the flood risk listDN31 1ED: not on the flood risk listDN31 1EP: not on the flood risk listDN31 1EW: not on the flood risk listDN31 1GA: not on the flood risk listDN31 1JN: not on the flood risk listDN31 1JP: not on the flood risk listDN31 1JR: not on the flood risk listDN31 1JU: not on the flood risk listDN31 1JZ: not on the flood risk listDN31 1LB: not on the flood risk listDN31 1LY: not on the flood risk listDN31 1LZ: not on the flood risk listDN31 1QX: not on the flood risk listDN31 1QZ: not on the flood risk listDN31 1RZ: not on the flood risk listDN31 1SB: not on the flood risk listDN31 1TA: not on the flood risk listDN31 1TB: not on the flood risk listDN31 1XZ: not on the flood risk listDN31 2AA: not on the flood risk listDN31 2AB: not on the flood risk listDN31 2AU: not on the flood risk listDN31 2AW: not on the flood risk listDN31 2AZ: not on the flood risk listDN31 2LE: not on the flood risk listDN31 2LF: not on the flood risk listDN31 2LG: not on the flood risk listDN31 2LP: not on the flood risk listDN31 1AA: very low flood risk onlyDN31 1QR: very low flood risk onlyDN31 1AE: very low flood risk onlyDN31 1BG: very low flood risk onlyDN31 1BL: very low flood risk onlyDN31 1DB: very low flood risk onlyDN31 1QL: very low flood risk onlyDN31 1EY: very low flood risk onlyDN31 1FQ: very low flood risk onlyDN31 1HB: very low flood risk onlyDN31 1HY: very low flood risk onlyDN31 1JE: very low flood risk onlyDN31 1JQ: very low flood risk onlyDN31 1JY: very low flood risk onlyDN31 1LH: very low flood risk onlyDN31 1LQ: very low flood risk onlyDN31 1NA: very low flood risk onlyDN31 1NB: very low flood risk onlyDN31 1NR: very low flood risk onlyDN31 1PQ: very low flood risk onlyDN31 1QS: very low flood risk onlyDN31 1RB: very low flood risk onlyDN31 1RD: very low flood risk onlyDN31 1RE: very low flood risk onlyDN31 1RF: very low flood risk onlyDN31 1RG: very low flood risk onlyDN31 1RH: very low flood risk onlyDN31 1RJ: very low flood risk onlyDN31 1RL: very low flood risk onlyDN31 1RN: very low flood risk onlyDN31 1RQ: very low flood risk onlyDN31 1RT: very low flood risk onlyDN31 1RU: very low flood risk onlyDN31 1RW: very low flood risk onlyDN31 1RY: very low flood risk onlyDN31 1SE: very low flood risk onlyDN31 1SF: very low flood risk onlyDN31 1SG: very low flood risk onlyDN31 1SJ: very low flood risk onlyDN31 1SQ: very low flood risk onlyDN31 1SY: very low flood risk onlyDN31 1TE: very low flood risk onlyDN31 1TG: very low flood risk onlyDN31 1TL: very low flood risk onlyDN31 1TN: very low flood risk onlyDN31 1TP: very low flood risk onlyDN31 1TQ: very low flood risk onlyDN31 1TR: very low flood risk onlyDN31 1TS: very low flood risk onlyDN31 1TT: very low flood risk onlyDN31 1TU: very low flood risk onlyDN31 1TW: very low flood risk onlyDN31 1TX: very low flood risk onlyDN31 1TY: very low flood risk onlyDN31 1UF: very low flood risk onlyDN31 1UG: very low flood risk onlyDN31 1UH: very low flood risk onlyDN31 1UJ: very low flood risk onlyDN31 1UL: very low flood risk onlyDN31 1UP: very low flood risk onlyDN31 1UU: very low flood risk onlyDN31 1XB: very low flood risk onlyDN31 1XD: very low flood risk onlyDN31 1XF: very low flood risk onlyDN31 1XG: very low flood risk onlyDN31 1XJ: very low flood risk onlyDN31 1XN: very low flood risk onlyDN31 1XP: very low flood risk onlyDN31 1XQ: very low flood risk onlyDN31 1XR: very low flood risk onlyDN31 1XS: very low flood risk onlyDN31 1XT: very low flood risk onlyDN31 1XU: very low flood risk onlyDN31 1XW: very low flood risk onlyDN31 1XY: very low flood risk onlyDN31 2BG: very low flood risk onlyDN31 2BH: very low flood risk onlyDN31 2BJ: very low flood risk onlyDN31 2BL: very low flood risk onlyDN31 2BN: very low flood risk onlyDN31 2BP: very low flood risk onlyDN31 2BQ: very low flood risk onlyDN31 2BS: very low flood risk onlyDN31 2BT: very low flood risk onlyDN31 2BW: very low flood risk onlyDN31 2DD: very low flood risk onlyDN31 2DF: very low flood risk onlyDN31 2DN: very low flood risk onlyDN31 2DR: very low flood risk onlyDN31 2DT: very low flood risk onlyDN31 2DU: very low flood risk onlyDN31 2DW: very low flood risk onlyDN31 2DX: very low flood risk onlyDN31 2EE: very low flood risk onlyDN31 2EU: very low flood risk onlyDN31 2FE: very low flood risk onlyDN31 2HB: very low flood risk onlyDN31 2HD: very low flood risk onlyDN31 2HE: very low flood risk onlyDN31 2HF: very low flood risk onlyDN31 2HG: very low flood risk onlyDN31 2HH: very low flood risk onlyDN31 2HJ: very low flood risk onlyDN31 2HP: very low flood risk onlyDN31 2HQ: very low flood risk onlyDN31 2HS: very low flood risk onlyDN31 2HW: very low flood risk onlyDN31 2HY: very low flood risk onlyDN31 2JH: very low flood risk onlyDN31 2JL: very low flood risk onlyDN31 2JN: very low flood risk onlyDN31 2JU: very low flood risk onlyDN31 2JX: very low flood risk onlyDN31 2JY: very low flood risk onlyDN31 2JZ: very low flood risk onlyDN31 2LJ: very low flood risk onlyDN31 2LU: very low flood risk onlyDN31 2LX: very low flood risk onlyDN31 2LY: very low flood risk onlyDN31 2LZ: very low flood risk onlyDN31 2NA: very low flood risk onlyDN31 2NB: very low flood risk onlyDN31 2ND: very low flood risk onlyDN31 2NF: very low flood risk onlyDN31 2NG: very low flood risk onlyDN31 2NN: very low flood risk onlyDN31 2NP: very low flood risk onlyDN31 2NR: very low flood risk onlyDN31 2NW: very low flood risk onlyDN31 2PB: very low flood risk onlyDN31 2PD: very low flood risk onlyDN31 2PE: very low flood risk onlyDN31 2PG: very low flood risk onlyDN31 2PH: very low flood risk onlyDN31 2PJ: very low flood risk onlyDN31 2PL: very low flood risk onlyDN31 2PP: very low flood risk onlyDN31 2PQ: very low flood risk onlyDN31 2PW: very low flood risk onlyDN31 2PY: very low flood risk onlyDN31 2PZ: very low flood risk onlyDN31 2QB: very low flood risk onlyDN31 2QD: very low flood risk onlyDN31 2QE: very low flood risk onlyDN31 2QF: very low flood risk onlyDN31 2QG: very low flood risk onlyDN31 2QH: very low flood risk onlyDN31 2QJ: very low flood risk onlyDN31 2QL: very low flood risk onlyDN31 2QQ: very low flood risk onlyDN31 2QW: very low flood risk onlyDN31 2RD: very low flood risk onlyDN31 2RE: very low flood risk onlyDN31 2RF: very low flood risk onlyDN31 2RG: very low flood risk onlyDN31 2RN: very low flood risk onlyDN31 2RQ: very low flood risk onlyDN31 2RU: very low flood risk onlyDN31 2RW: very low flood risk onlyDN31 2RX: very low flood risk onlyDN31 2SB: very low flood risk onlyDN31 2SD: very low flood risk onlyDN31 2SQ: very low flood risk onlyDN31 2SU: very low flood risk onlyDN31 2UA: very low flood risk onlyDN31 3AH: very low flood risk onlyDN31 3SH: very low flood risk onlyDN31 1AF: low flood risk at worstDN31 1BA: low flood risk at worstDN31 1BJ: low flood risk at worstDN31 1GB: low flood risk at worstDN31 1HN: low flood risk at worstDN31 1HU: low flood risk at worstDN31 1HX: low flood risk at worstDN31 1NS: low flood risk at worstDN31 1NT: low flood risk at worstDN31 1NX: low flood risk at worstDN31 1PE: low flood risk at worstDN31 1PG: low flood risk at worstDN31 1PH: low flood risk at worstDN31 1PS: low flood risk at worstDN31 1PT: low flood risk at worstDN31 1QD: low flood risk at worstDN31 1QG: low flood risk at worstDN31 2BA: low flood risk at worstDN31 2BB: low flood risk at worstDN31 2BE: low flood risk at worstDN31 2BU: low flood risk at worstDN31 2BX: low flood risk at worstDN31 2BY: low flood risk at worstDN31 2BZ: low flood risk at worstDN31 2DA: low flood risk at worstDN31 2DB: low flood risk at worstDN31 2DG: low flood risk at worstDN31 2DH: low flood risk at worstDN31 2DJ: low flood risk at worstDN31 2DL: low flood risk at worstDN31 2DS: low flood risk at worstDN31 2DY: low flood risk at worstDN31 2EA: low flood risk at worstDN31 2EB: low flood risk at worstDN31 2ED: low flood risk at worstDN31 2EG: low flood risk at worstDN31 2EP: low flood risk at worstDN31 2EQ: low flood risk at worstDN31 2ES: low flood risk at worstDN31 2ET: low flood risk at worstDN31 2EX: low flood risk at worstDN31 2FA: low flood risk at worstDN31 2FB: low flood risk at worstDN31 2FD: low flood risk at worstDN31 2FF: low flood risk at worstDN31 2FG: low flood risk at worstDN31 2FH: low flood risk at worstDN31 2FJ: low flood risk at worstDN31 2FL: low flood risk at worstDN31 2FN: low flood risk at worstDN31 2HN: low flood risk at worstDN31 2HR: low flood risk at worstDN31 2HU: low flood risk at worstDN31 2HX: low flood risk at worstDN31 2JB: low flood risk at worstDN31 2JD: low flood risk at worstDN31 2JJ: low flood risk at worstDN31 2JP: low flood risk at worstDN31 2JQ: low flood risk at worstDN31 2JT: low flood risk at worstDN31 2NJ: low flood risk at worstDN31 2NL: low flood risk at worstDN31 2NQ: low flood risk at worstDN31 2NS: low flood risk at worstDN31 2NT: low flood risk at worstDN31 2NU: low flood risk at worstDN31 2NX: low flood risk at worstDN31 2PA: low flood risk at worstDN31 2QP: low flood risk at worstDN31 2QR: low flood risk at worstDN31 2QS: low flood risk at worstDN31 2QT: low flood risk at worstDN31 2QU: low flood risk at worstDN31 2QX: low flood risk at worstDN31 2QY: low flood risk at worstDN31 2QZ: low flood risk at worstDN31 2RA: low flood risk at worstDN31 2RB: low flood risk at worstDN31 2RH: low flood risk at worstDN31 2RJ: low flood risk at worstDN31 2RP: low flood risk at worstDN31 2RR: low flood risk at worstDN31 2RZ: low flood risk at worstDN31 2SA: low flood risk at worstDN31 2SG: low flood risk at worstDN31 2SJ: low flood risk at worstDN31 2SL: low flood risk at worstDN31 2SZ: low flood risk at worstDN31 2TB: low flood risk at worstDN31 2TJ: low flood risk at worstDN31 2TN: low flood risk at worstDN31 2TP: low flood risk at worstDN31 2UE: low flood risk at worstDN31 2UJ: low flood risk at worstDN31 2UR: low flood risk at worstDN31 3AR: low flood risk at worstDN31 2UT: low flood risk at worstDN31 2UW: low flood risk at worstDN31 3AA: low flood risk at worstDN31 3AE: low flood risk at worstDN31 3AG: low flood risk at worstDN31 3AL: low flood risk at worstDN31 3AN: low flood risk at worstDN31 3AT: low flood risk at worstDN31 3AU: low flood risk at worstDN31 3BL: low flood risk at worstDN31 3BP: low flood risk at worstDN31 3BU: low flood risk at worstDN31 3DA: low flood risk at worstDN31 3DH: low flood risk at worstDN31 3DS: low flood risk at worstDN31 3DT: low flood risk at worstDN31 3DX: low flood risk at worstDN31 3EF: low flood risk at worstDN31 3FS: low flood risk at worstDN31 3HL: low flood risk at worstDN31 3HY: low flood risk at worstDN31 3JD: low flood risk at worstDN31 3JH: low flood risk at worstDN31 3JP: low flood risk at worstDN31 3JS: low flood risk at worstDN31 3LA: low flood risk at worstDN31 3LB: low flood risk at worstDN31 3LL: low flood risk at worstDN31 3LQ: low flood risk at worstDN31 3LS: low flood risk at worstDN31 3NB: low flood risk at worstDN31 3RD: low flood risk at worstDN31 3SG: low flood risk at worstDN31 3TN: low flood risk at worstDN31 1UZ: medium flood risk at worstDN31 2EH: medium flood risk at worstDN31 2EJ: medium flood risk at worstDN31 2EL: medium flood risk at worstDN31 2EN: medium flood risk at worstDN31 2EW: medium flood risk at worstDN31 2HT: medium flood risk at worstDN31 2HZ: medium flood risk at worstDN31 2JA: medium flood risk at worstDN31 2JE: medium flood risk at worstDN31 2JF: medium flood risk at worstDN31 2JG: medium flood risk at worstDN31 2JR: medium flood risk at worstDN31 2JS: medium flood risk at worstDN31 2NH: medium flood risk at worstDN31 2RL: medium flood risk at worstDN31 2TG: medium flood risk at worstDN31 2TX: medium flood risk at worstDN31 2UD: medium flood risk at worstDN31 3AF: medium flood risk at worstDN31 3AX: medium flood risk at worstDN31 3AY: medium flood risk at worstDN31 3BE: medium flood risk at worstDN31 3BH: medium flood risk at worstDN31 3BT: medium flood risk at worstDN31 3ER: medium flood risk at worstDN31 3ET: medium flood risk at worstDN31 3EW: medium flood risk at worstDN31 3HB: medium flood risk at worstDN31 3HF: medium flood risk at worstDN31 3HG: medium flood risk at worstDN31 3HH: medium flood risk at worstDN31 3HW: medium flood risk at worstDN31 3LG: medium flood risk at worstDN31 3NE: medium flood risk at worstDN31 3PD: medium flood risk at worstDN31 3PU: medium flood risk at worstDN31 3QF: medium flood risk at worstDN31 3SD: medium flood risk at worstDN31 3SW: medium flood risk at worstDN31 1FB: high flood riskDN31 1NH: high flood riskDN31 1RP: high flood riskDN31 2AN: high flood riskDN31 2QN: high flood riskDN31 2RY: high flood riskDN31 2SY: high flood riskDN31 3PG: high flood riskDN31 3QJ: high flood riskDN31 3QL: high flood riskDN31 3RP: high flood riskDN31 3SL: high flood riskDN31 3SX: high flood riskDN31 3SY: high flood riskDN31 3TD: high flood risk West MarshEast Marsh 14 postcodes at high or medium risk, outlined: this goes to DN31 2EW, the one with most homes and businesses at high risk14 postcodes at high or medium risk14 postcodes at high or medium risk, outlined: this goes to DN31 3HW, the one with most homes and businesses at high risk14 postcodes at high or medium risk5 postcodes at high or medium risk, outlined: this goes to DN31 3RP, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in DN31, by flood risk Of the 458 postcodes in DN31 that ONS places, 16 have a home or business at high risk, 40 are at medium risk at worst, 136 are at low risk at worst, 187 are at very low risk only and 79 are not on the Environment Agency's at-risk list. 3 groups of postcodes at high or medium risk are outlined: 14 postcodes at high or medium risk; 14 postcodes at high or medium risk; 5 postcodes at high or medium risk. 2 postcodes lie beyond the edge and are listed under the map. Places named: West Marsh, East Marsh. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. West MarshEast Marsh
  • A home or business at high risk: 16
  • At medium risk at worst: 40
  • At low risk at worst: 136
  • At very low risk only: 187
  • Not on the at-risk list: 79
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 458 postcodes in DN31 that ONS places, 16 have a home or business at high risk, 40 are at medium risk at worst, 136 are at low risk at worst, 187 are at very low risk only and 79 are not on the Environment Agency's at-risk list.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 53.5700, longitude -0.0898. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The postcodes at high risk

16 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

DN31 2TT31 at high riskDN31 3SX26 at high riskDN31 3SY20 at high riskDN31 2SY15 at high riskDN31 2AN12 at high riskDN31 3QJ9 at high riskDN31 3TD7 at high riskDN31 2RY4 at high riskDN31 3PG2 at high riskDN31 3RP1 at high riskDN31 3QL1 at high riskDN31 3SL1 at high risk

2 further out, not drawn

These postcodes lie well apart from the rest, so the map is drawn without them to show the rest closer; they are in every count.

DN31 2TTDN31 3AS

Where the postcodes at high or medium risk lie together

  • 14 postcodes at high or medium risk, outlined on the map. DN31 2EW, is the one with most homes and businesses at high risk.
  • 14 postcodes at high or medium risk, outlined on the map. DN31 3HW, is the one with most homes and businesses at high risk.
  • 5 postcodes at high or medium risk, outlined on the map. DN31 3RP, is the one with most homes and businesses at high risk.

What broadband can you get in DN31?

Ofcom reports on 417 of the 458 postcodes in DN31. At 283 of them every home and business can get gigabit broadband, and at 7 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit283 of 417
Postcodes where every home can get superfast323 of 417
Postcodes where some cannot get decent broadband7 of 417

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is DN31 at risk of flooding?

379 of the 458 postcodes in DN31 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 856 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 379 of 458 postcodes High: 133Medium: 723Low: 1,995Very low: 4,252

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in DN31?

Homes in DN31 sold for a typical £82,000 in the 12 months to August 2026, across 102 sales, up 3.5% on the 12 months before, HM Land Registry's figures show.

£82,000 typical price, the 12 months to August 2026
12 months to August 2025
£79,238
12 months to August 2026
£82,000

▲ up 3.5% on the 12 months before

Detached 2 sales, too few to price
Semi-detached£132,000 12 sales
Terraced£80,000 81 sales
Flat or maisonette£45,000 7 sales

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Postcodes in DN31

Pick a sector, then a postcode. A sector is the district plus the next digit.

DN31 1141 postcodesDN31 2214 postcodesDN31 371 postcodesDN31 932 postcodes
UK postcode format explained

Places in DN31

Towns and villages with postcodes in DN31, and how many each has here.

Grimsby postcodes,457Immingham postcodes,1

Who covers DN31

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Great Grimsby and Cleethorpes456
  • Brigg and Immingham2

Police force areas

  • Humberside458

Next to DN31

DN22 postcode district DN32 postcode district All DN districts Grimsby postcodes

"Next to" is by number: the districts before and after DN31 in the DN area.

Check a postcode

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