DN21 2 postcode sector in the DN21 district

DN21 2 is a sector of the DN21 district: every postcode that starts DN21 2. It has 212 postcodes in use, 10 of them large-user postcodes. A large-user postcode is one Royal Mail gives to a single address that gets a lot of mail.

Not sure what a sector is? UK postcode format explained.

Every postcode in the DN21 2 sector, by flood risk

Map of every postcode in the DN21 2 sector, by flood risk Of the 212 postcodes in the DN21 2 sector that ONS places, 2 have a home or business at high risk, 74 are at medium risk at worst, 23 are at low risk at worst, 27 are at very low risk only and 86 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 66 postcodes at high or medium risk; 10 postcodes at high or medium risk. Places named: Gainsborough. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. DN21 2AA: not on the flood risk listDN21 2AB: not on the flood risk listDN21 2AG: not on the flood risk listDN21 2AU: not on the flood risk listDN21 2AX: not on the flood risk listDN21 2AY: not on the flood risk listDN21 2BE: not on the flood risk listDN21 2BG: not on the flood risk listDN21 2BL: not on the flood risk listDN21 2BQ: not on the flood risk listDN21 2BY: not on the flood risk listDN21 2BZ: not on the flood risk listDN21 2DB: not on the flood risk listDN21 2DD: not on the flood risk listDN21 2DJ: not on the flood risk listDN21 2DP: not on the flood risk listDN21 2DW: not on the flood risk listDN21 2EH: not on the flood risk listDN21 2ER: not on the flood risk listDN21 2EY: not on the flood risk listDN21 2EZ: not on the flood risk listDN21 2FB: not on the flood risk listDN21 2FD: not on the flood risk listDN21 2FN: not on the flood risk listDN21 2FP: not on the flood risk listDN21 2FQ: not on the flood risk listDN21 2FR: not on the flood risk listDN21 2HA: not on the flood risk listDN21 2HB: not on the flood risk listDN21 2HD: not on the flood risk listDN21 2HE: not on the flood risk listDN21 2HH: not on the flood risk listDN21 2HJ: not on the flood risk listDN21 2HL: not on the flood risk listDN21 2HN: not on the flood risk listDN21 2HP: not on the flood risk listDN21 2HQ: not on the flood risk listDN21 2HR: not on the flood risk listDN21 2HS: not on the flood risk listDN21 2HU: not on the flood risk listDN21 2HW: not on the flood risk listDN21 2HZ: not on the flood risk listDN21 2JA: not on the flood risk listDN21 2JB: not on the flood risk listDN21 2JD: not on the flood risk listDN21 2JE: not on the flood risk listDN21 2JF: not on the flood risk listDN21 2JG: not on the flood risk listDN21 2JP: not on the flood risk listDN21 2JQ: not on the flood risk listDN21 2JY: not on the flood risk listDN21 2LW: not on the flood risk listDN21 2NA: not on the flood risk listDN21 2NG: not on the flood risk listDN21 2NJ: not on the flood risk listDN21 2NL: not on the flood risk listDN21 2NQ: not on the flood risk listDN21 2QE: not on the flood risk listDN21 2QJ: not on the flood risk listDN21 2QL: not on the flood risk listDN21 2QN: not on the flood risk listDN21 2QP: not on the flood risk listDN21 2QR: not on the flood risk listDN21 2QS: not on the flood risk listDN21 2QT: not on the flood risk listDN21 2QU: not on the flood risk listDN21 2QW: not on the flood risk listDN21 2QX: not on the flood risk listDN21 2QY: not on the flood risk listDN21 2QZ: not on the flood risk listDN21 2RA: not on the flood risk listDN21 2RB: not on the flood risk listDN21 2RD: not on the flood risk listDN21 2RE: not on the flood risk listDN21 2RF: not on the flood risk listDN21 2RG: not on the flood risk listDN21 2RQ: not on the flood risk listDN21 2ST: not on the flood risk listDN21 2TJ: not on the flood risk listDN21 2TP: not on the flood risk listDN21 2TR: not on the flood risk listDN21 2TS: not on the flood risk listDN21 2TT: not on the flood risk listDN21 2TW: not on the flood risk listDN21 2UA: not on the flood risk listDN21 2AR: very low flood risk onlyDN21 2FL: very low flood risk onlyDN21 2JH: very low flood risk onlyDN21 2JJ: very low flood risk onlyDN21 2JR: very low flood risk onlyDN21 2JS: very low flood risk onlyDN21 2JT: very low flood risk onlyDN21 2JU: very low flood risk onlyDN21 2JW: very low flood risk onlyDN21 2JX: very low flood risk onlyDN21 2JZ: very low flood risk onlyDN21 2LJ: very low flood risk onlyDN21 2LN: very low flood risk onlyDN21 2NB: very low flood risk onlyDN21 2NZ: very low flood risk onlyDN21 2PE: very low flood risk onlyDN21 2PF: very low flood risk onlyDN21 2PR: very low flood risk onlyDN21 2RJ: very low flood risk onlyDN21 2RS: very low flood risk onlyDN21 2RT: very low flood risk onlyDN21 2RU: very low flood risk onlyDN21 2SB: very low flood risk onlyDN21 2SS: very low flood risk onlyDN21 2TH: very low flood risk onlyDN21 2TL: very low flood risk onlyDN21 2TN: very low flood risk onlyDN21 2AE: low flood risk at worstDN21 2AJ: low flood risk at worstDN21 2AL: low flood risk at worstDN21 2AN: low flood risk at worstDN21 2AP: low flood risk at worstDN21 2AQ: low flood risk at worstDN21 2AS: low flood risk at worstDN21 2AT: low flood risk at worstDN21 2BP: low flood risk at worstDN21 2BX: low flood risk at worstDN21 2DL: low flood risk at worstDN21 2DT: low flood risk at worstDN21 2DY: low flood risk at worstDN21 2DZ: low flood risk at worstDN21 2EA: low flood risk at worstDN21 2EE: low flood risk at worstDN21 2EF: low flood risk at worstDN21 2EG: low flood risk at worstDN21 2EQ: low flood risk at worstDN21 2EW: low flood risk at worstDN21 2QD: low flood risk at worstDN21 2RY: low flood risk at worstDN21 2UD: low flood risk at worstDN21 2FE: medium flood risk at worstDN21 2FF: medium flood risk at worstDN21 2FH: medium flood risk at worstDN21 2FJ: medium flood risk at worstDN21 2LA: medium flood risk at worstDN21 2LB: medium flood risk at worstDN21 2LD: medium flood risk at worstDN21 2LE: medium flood risk at worstDN21 2LF: medium flood risk at worstDN21 2LG: medium flood risk at worstDN21 2LH: medium flood risk at worstDN21 2LL: medium flood risk at worstDN21 2LQ: medium flood risk at worstDN21 2LY: medium flood risk at worstDN21 2ND: medium flood risk at worstDN21 2NE: medium flood risk at worstDN21 2NF: medium flood risk at worstDN21 2NP: medium flood risk at worstDN21 2NR: medium flood risk at worstDN21 2NS: medium flood risk at worstDN21 2NT: medium flood risk at worstDN21 2NU: medium flood risk at worstDN21 2NW: medium flood risk at worstDN21 2NX: medium flood risk at worstDN21 2NY: medium flood risk at worstDN21 2PA: medium flood risk at worstDN21 2PB: medium flood risk at worstDN21 2PD: medium flood risk at worstDN21 2PG: medium flood risk at worstDN21 2PH: medium flood risk at worstDN21 2PJ: medium flood risk at worstDN21 2PL: medium flood risk at worstDN21 2PN: medium flood risk at worstDN21 2PP: medium flood risk at worstDN21 2PQ: medium flood risk at worstDN21 2PS: medium flood risk at worstDN21 2PT: medium flood risk at worstDN21 2PU: medium flood risk at worstDN21 2PW: medium flood risk at worstDN21 2QA: medium flood risk at worstDN21 2QB: medium flood risk at worstDN21 2QG: medium flood risk at worstDN21 2RH: medium flood risk at worstDN21 2RL: medium flood risk at worstDN21 2RN: medium flood risk at worstDN21 2RP: medium flood risk at worstDN21 2RR: medium flood risk at worstDN21 2RX: medium flood risk at worstDN21 2RZ: medium flood risk at worstDN21 2SA: medium flood risk at worstDN21 2SD: medium flood risk at worstDN21 2SE: medium flood risk at worstDN21 2SF: medium flood risk at worstDN21 2SG: medium flood risk at worstDN21 2SU: medium flood risk at worstDN21 2SY: medium flood risk at worstDN21 2SZ: medium flood risk at worstDN21 2TA: medium flood risk at worstDN21 2TB: medium flood risk at worstDN21 2TD: medium flood risk at worstDN21 2TF: medium flood risk at worstDN21 2TG: medium flood risk at worstDN21 2TQ: medium flood risk at worstDN21 2TU: medium flood risk at worstDN21 2TX: medium flood risk at worstDN21 2TY: medium flood risk at worstDN21 2TZ: medium flood risk at worstDN21 2UE: medium flood risk at worstDN21 2UJ: medium flood risk at worstDN21 2UL: medium flood risk at worstDN21 2UQ: medium flood risk at worstDN21 2UR: medium flood risk at worstDN21 2UU: medium flood risk at worstDN21 2WB: medium flood risk at worstDN21 2FG: high flood riskDN21 2TE: high flood risk Gainsborough 66 postcodes at high or medium risk, outlined: this goes to DN21 2FG, the one with most homes and businesses at high risk66 postcodes at high or medium risk10 postcodes at high or medium risk, outlined: this goes to DN21 2TE, the one with most homes and businesses at high risk10 postcodes at high or medium risk Map of every postcode in the DN21 2 sector, by flood risk Of the 212 postcodes in the DN21 2 sector that ONS places, 2 have a home or business at high risk, 74 are at medium risk at worst, 23 are at low risk at worst, 27 are at very low risk only and 86 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 66 postcodes at high or medium risk; 10 postcodes at high or medium risk. Places named: Gainsborough. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Gainsborough
  • A home or business at high risk: 2
  • At medium risk at worst: 74
  • At low risk at worst: 23
  • At very low risk only: 27
  • Not on the at-risk list: 86
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 212 postcodes in the DN21 2 sector that ONS places, 2 have a home or business at high risk, 74 are at medium risk at worst, 23 are at low risk at worst, 27 are at very low risk only and 86 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.

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

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

DN21 2FG3 at high riskDN21 2TE1 at high risk

Where the postcodes at high or medium risk lie together

  • 66 postcodes at high or medium risk, outlined on the map. DN21 2FG, is the one with most homes and businesses at high risk.
  • 10 postcodes at high or medium risk, outlined on the map. DN21 2TE, is the one with most homes and businesses at high risk.

What do homes sell for in DN21 2?

Homes in DN21 2 sold for a typical £122,000 in the 12 months to August 2026, across 90 sales, up 8% on the 12 months before, HM Land Registry's figures show.

£122,000 typical price, the 12 months to August 2026
£113,000 12 months to August 2025
▲ up 8% on the 12 months before
  • Detached £209,000 9 sales
  • Semi-detached £140,175 36 sales
  • Terraced £101,250 40 sales
  • Flat or maisonette £116,000 5 sales

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value at the postcodes that start DN21 2. A typical price is the median, the middle sale, given from 5 sales or more.

How we work this out: house prices by postcode

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 DN21 2

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

DN21 2AADN21 2ABDN21 2AEDN21 2AGDN21 2AJDN21 2ALDN21 2ANDN21 2APDN21 2AQDN21 2ARDN21 2ASDN21 2ATDN21 2AUDN21 2AXDN21 2AYDN21 2BEDN21 2BGDN21 2BLDN21 2BPDN21 2BQDN21 2BXDN21 2BYDN21 2BZDN21 2DBDN21 2DDDN21 2DJDN21 2DLDN21 2DPDN21 2DTDN21 2DWDN21 2DYDN21 2DZDN21 2EADN21 2EEDN21 2EFDN21 2EGDN21 2EHDN21 2EQDN21 2ERDN21 2EUDN21 2EWDN21 2EYDN21 2EZDN21 2FBDN21 2FDDN21 2FEDN21 2FFDN21 2FGDN21 2FHDN21 2FJDN21 2FLDN21 2FNDN21 2FPDN21 2FQDN21 2FRDN21 2HADN21 2HBDN21 2HDDN21 2HEDN21 2HHDN21 2HJDN21 2HLDN21 2HNDN21 2HPDN21 2HQDN21 2HRDN21 2HSDN21 2HUDN21 2HWDN21 2HZDN21 2JADN21 2JBDN21 2JDDN21 2JEDN21 2JFDN21 2JGDN21 2JHDN21 2JJDN21 2JPDN21 2JQDN21 2JRDN21 2JSDN21 2JTDN21 2JUDN21 2JWDN21 2JXDN21 2JYDN21 2JZDN21 2LADN21 2LBDN21 2LDDN21 2LEDN21 2LFDN21 2LGDN21 2LHDN21 2LJDN21 2LLDN21 2LNDN21 2LQDN21 2LWDN21 2LYDN21 2NADN21 2NBDN21 2NDDN21 2NEDN21 2NFDN21 2NGDN21 2NJDN21 2NLDN21 2NPDN21 2NQDN21 2NRDN21 2NSDN21 2NTDN21 2NUDN21 2NWDN21 2NXDN21 2NYDN21 2NZDN21 2PADN21 2PBDN21 2PDDN21 2PEDN21 2PFDN21 2PGDN21 2PHDN21 2PJDN21 2PLDN21 2PNDN21 2PPDN21 2PQDN21 2PRDN21 2PSDN21 2PTDN21 2PUDN21 2PWDN21 2QADN21 2QBDN21 2QDDN21 2QEDN21 2QGDN21 2QJDN21 2QLDN21 2QNDN21 2QPDN21 2QRDN21 2QSDN21 2QTDN21 2QUDN21 2QWDN21 2QXDN21 2QYDN21 2QZDN21 2RADN21 2RBDN21 2RDDN21 2REDN21 2RFDN21 2RGDN21 2RHDN21 2RJDN21 2RLDN21 2RNDN21 2RPDN21 2RQDN21 2RRDN21 2RSDN21 2RTDN21 2RUDN21 2RXDN21 2RYDN21 2RZDN21 2SADN21 2SBDN21 2SDDN21 2SEDN21 2SFDN21 2SGDN21 2SSDN21 2STDN21 2SUDN21 2SYDN21 2SZDN21 2TADN21 2TBDN21 2TDDN21 2TEDN21 2TFDN21 2TGDN21 2THDN21 2TJDN21 2TLDN21 2TNDN21 2TPDN21 2TQDN21 2TRDN21 2TSDN21 2TTDN21 2TUDN21 2TWDN21 2TXDN21 2TYDN21 2TZDN21 2UADN21 2UDDN21 2UEDN21 2UJDN21 2ULDN21 2UQDN21 2URDN21 2UUDN21 2WB

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

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