MK40 4 postcode sector in the MK40 district

MK40 4 is a sector of the MK40 district: every postcode that starts MK40 4. It has 337 postcodes in use, 6 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 MK40 4 sector, by flood risk

Map of every postcode in the MK40 4 sector, by flood risk Of the 337 postcodes in the MK40 4 sector that ONS places, 2 have a home or business at high risk, 2 are at medium risk at worst, 16 are at low risk at worst and 317 are not on the Environment Agency's at-risk list. Places named: Great Denham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A6A5141 MK40 4AA: not on the flood risk listMK40 4AB: not on the flood risk listMK40 4AD: not on the flood risk listMK40 4AE: not on the flood risk listMK40 4AF: not on the flood risk listMK40 4AG: not on the flood risk listMK40 4AJ: not on the flood risk listMK40 4AL: not on the flood risk listMK40 4AN: not on the flood risk listMK40 4AP: not on the flood risk listMK40 4AQ: not on the flood risk listMK40 4AR: not on the flood risk listMK40 4AS: not on the flood risk listMK40 4AT: not on the flood risk listMK40 4AU: not on the flood risk listMK40 4AW: not on the flood risk listMK40 4AX: not on the flood risk listMK40 4AY: not on the flood risk listMK40 4AZ: not on the flood risk listMK40 4BA: not on the flood risk listMK40 4BB: not on the flood risk listMK40 4BD: not on the flood risk listMK40 4BE: not on the flood risk listMK40 4BF: not on the flood risk listMK40 4BG: not on the flood risk listMK40 4BH: not on the flood risk listMK40 4BJ: not on the flood risk listMK40 4BL: not on the flood risk listMK40 4BN: not on the flood risk listMK40 4BP: not on the flood risk listMK40 4BQ: not on the flood risk listMK40 4BS: not on the flood risk listMK40 4BT: not on the flood risk listMK40 4BU: not on the flood risk listMK40 4BW: not on the flood risk listMK40 4BX: not on the flood risk listMK40 4BY: not on the flood risk listMK40 4BZ: not on the flood risk listMK40 4DA: not on the flood risk listMK40 4DB: not on the flood risk listMK40 4DD: not on the flood risk listMK40 4DE: not on the flood risk listMK40 4DF: not on the flood risk listMK40 4DG: not on the flood risk listMK40 4DH: not on the flood risk listMK40 4DJ: not on the flood risk listMK40 4DL: not on the flood risk listMK40 4DN: not on the flood risk listMK40 4DP: not on the flood risk listMK40 4DQ: not on the flood risk listMK40 4DR: not on the flood risk listMK40 4DS: not on the flood risk listMK40 4DT: not on the flood risk listMK40 4DU: not on the flood risk listMK40 4DW: not on the flood risk listMK40 4DX: not on the flood risk listMK40 4DY: not on the flood risk listMK40 4DZ: not on the flood risk listMK40 4EA: not on the flood risk listMK40 4EB: not on the flood risk listMK40 4ED: not on the flood risk listMK40 4EE: not on the flood risk listMK40 4EF: not on the flood risk listMK40 4EG: not on the flood risk listMK40 4EH: not on the flood risk listMK40 4EJ: not on the flood risk listMK40 4EL: not on the flood risk listMK40 4EN: not on the flood risk listMK40 4EP: not on the flood risk listMK40 4EQ: not on the flood risk listMK40 4ER: not on the flood risk listMK40 4ES: not on the flood risk listMK40 4ET: not on the flood risk listMK40 4EU: not on the flood risk listMK40 4EW: not on the flood risk listMK40 4EY: not on the flood risk listMK40 4EZ: not on the flood risk listMK40 4FA: not on the flood risk listMK40 4FB: not on the flood risk listMK40 4FD: not on the flood risk listMK40 4FE: not on the flood risk listMK40 4FF: not on the flood risk listMK40 4FG: not on the flood risk listMK40 4FH: not on the flood risk listMK40 4FJ: not on the flood risk listMK40 4FL: not on the flood risk listMK40 4FN: not on the flood risk listMK40 4FP: not on the flood risk listMK40 4FQ: not on the flood risk listMK40 4FR: not on the flood risk listMK40 4FS: not on the flood risk listMK40 4FT: not on the flood risk listMK40 4FU: not on the flood risk listMK40 4FW: not on the flood risk listMK40 4FX: not on the flood risk listMK40 4FY: not on the flood risk listMK40 4FZ: not on the flood risk listMK40 4GA: not on the flood risk listMK40 4GB: not on the flood risk listMK40 4GD: not on the flood risk listMK40 4GE: not on the flood risk listMK40 4GF: not on the flood risk listMK40 4GG: not on the flood risk listMK40 4GH: not on the flood risk listMK40 4GJ: not on the flood risk listMK40 4GL: not on the flood risk listMK40 4GN: not on the flood risk listMK40 4GP: not on the flood risk listMK40 4GQ: not on the flood risk listMK40 4GR: not on the flood risk listMK40 4GT: not on the flood risk listMK40 4GU: not on the flood risk listMK40 4GW: not on the flood risk listMK40 4GX: not on the flood risk listMK40 4GY: not on the flood risk listMK40 4GZ: not on the flood risk listMK40 4HA: not on the flood risk listMK40 4HD: not on the flood risk listMK40 4HE: not on the flood risk listMK40 4HF: not on the flood risk listMK40 4HG: not on the flood risk listMK40 4HH: not on the flood risk listMK40 4HJ: not on the flood risk listMK40 4HL: not on the flood risk listMK40 4HN: not on the flood risk listMK40 4HP: not on the flood risk listMK40 4HQ: not on the flood risk listMK40 4HR: not on the flood risk listMK40 4HS: not on the flood risk listMK40 4HU: not on the flood risk listMK40 4HW: not on the flood risk listMK40 4HX: not on the flood risk listMK40 4HY: not on the flood risk listMK40 4HZ: not on the flood risk listMK40 4JA: not on the flood risk listMK40 4JD: not on the flood risk listMK40 4JF: not on the flood risk listMK40 4JG: not on the flood risk listMK40 4JH: not on the flood risk listMK40 4JL: not on the flood risk listMK40 4JT: not on the flood risk listMK40 4JU: not on the flood risk listMK40 4JX: not on the flood risk listMK40 4JZ: not on the flood risk listMK40 4LB: not on the flood risk listMK40 4LD: not on the flood risk listMK40 4LE: not on the flood risk listMK40 4LF: not on the flood risk listMK40 4LG: not on the flood risk listMK40 4LH: not on the flood risk listMK40 4LJ: not on the flood risk listMK40 4LL: not on the flood risk listMK40 4LN: not on the flood risk listMK40 4LP: not on the flood risk listMK40 4LQ: not on the flood risk listMK40 4LR: not on the flood risk listMK40 4LS: not on the flood risk listMK40 4LW: not on the flood risk listMK40 4LY: not on the flood risk listMK40 4LZ: not on the flood risk listMK40 4NA: not on the flood risk listMK40 4NB: not on the flood risk listMK40 4ND: not on the flood risk listMK40 4NE: not on the flood risk listMK40 4NF: not on the flood risk listMK40 4NG: not on the flood risk listMK40 4NJ: not on the flood risk listMK40 4NL: not on the flood risk listMK40 4NN: not on the flood risk listMK40 4NP: not on the flood risk listMK40 4NQ: not on the flood risk listMK40 4NR: not on the flood risk listMK40 4NS: not on the flood risk listMK40 4NT: not on the flood risk listMK40 4NU: not on the flood risk listMK40 4NW: not on the flood risk listMK40 4NX: not on the flood risk listMK40 4NY: not on the flood risk listMK40 4NZ: not on the flood risk listMK40 4PA: not on the flood risk listMK40 4PB: not on the flood risk listMK40 4PD: not on the flood risk listMK40 4PE: not on the flood risk listMK40 4PF: not on the flood risk listMK40 4PG: not on the flood risk listMK40 4PH: not on the flood risk listMK40 4PQ: not on the flood risk listMK40 4PR: not on the flood risk listMK40 4PS: not on the flood risk listMK40 4PT: not on the flood risk listMK40 4PU: not on the flood risk listMK40 4PX: not on the flood risk listMK40 4PZ: not on the flood risk listMK40 4QA: not on the flood risk listMK40 4QB: not on the flood risk listMK40 4QD: not on the flood risk listMK40 4QE: not on the flood risk listMK40 4QG: not on the flood risk listMK40 4QH: not on the flood risk listMK40 4QJ: not on the flood risk listMK40 4QL: not on the flood risk listMK40 4QN: not on the flood risk listMK40 4QP: not on the flood risk listMK40 4QQ: not on the flood risk listMK40 4QR: not on the flood risk listMK40 4QS: not on the flood risk listMK40 4QT: not on the flood risk listMK40 4QU: not on the flood risk listMK40 4QW: not on the flood risk listMK40 4QX: not on the flood risk listMK40 4QY: not on the flood risk listMK40 4QZ: not on the flood risk listMK40 4RA: not on the flood risk listMK40 4RB: not on the flood risk listMK40 4RE: not on the flood risk listMK40 4RF: not on the flood risk listMK40 4RG: not on the flood risk listMK40 4RN: not on the flood risk listMK40 4RP: not on the flood risk listMK40 4RQ: not on the flood risk listMK40 4RR: not on the flood risk listMK40 4RS: not on the flood risk listMK40 4RT: not on the flood risk listMK40 4RW: not on the flood risk listMK40 4RY: not on the flood risk listMK40 4RZ: not on the flood risk listMK40 4SA: not on the flood risk listMK40 4SB: not on the flood risk listMK40 4SD: not on the flood risk listMK40 4SE: not on the flood risk listMK40 4SF: not on the flood risk listMK40 4SG: not on the flood risk listMK40 4SH: not on the flood risk listMK40 4SJ: not on the flood risk listMK40 4SL: not on the flood risk listMK40 4SN: not on the flood risk listMK40 4SP: not on the flood risk listMK40 4SU: not on the flood risk listMK40 4SW: not on the flood risk listMK40 4SX: not on the flood risk listMK40 4SY: not on the flood risk listMK40 4SZ: not on the flood risk listMK40 4TA: not on the flood risk listMK40 4TB: not on the flood risk listMK40 4TD: not on the flood risk listMK40 4TE: not on the flood risk listMK40 4TF: not on the flood risk listMK40 4TG: not on the flood risk listMK40 4TH: not on the flood risk listMK40 4TJ: not on the flood risk listMK40 4TL: not on the flood risk listMK40 4TN: not on the flood risk listMK40 4TP: not on the flood risk listMK40 4TQ: not on the flood risk listMK40 4TR: not on the flood risk listMK40 4TS: not on the flood risk listMK40 4TT: not on the flood risk listMK40 4TU: not on the flood risk listMK40 4TW: not on the flood risk listMK40 4TX: not on the flood risk listMK40 4TY: not on the flood risk listMK40 4TZ: not on the flood risk listMK40 4UA: not on the flood risk listMK40 4UB: not on the flood risk listMK40 4UD: not on the flood risk listMK40 4UE: not on the flood risk listMK40 4UF: not on the flood risk listMK40 4UG: not on the flood risk listMK40 4UH: not on the flood risk listMK40 4UJ: not on the flood risk listMK40 4UL: not on the flood risk listMK40 4UN: not on the flood risk listMK40 4UP: not on the flood risk listMK40 4UQ: not on the flood risk listMK40 4UR: not on the flood risk listMK40 4US: not on the flood risk listMK40 4UT: not on the flood risk listMK40 4UU: not on the flood risk listMK40 4UW: not on the flood risk listMK40 4UX: not on the flood risk listMK40 4UY: not on the flood risk listMK40 4UZ: not on the flood risk listMK40 4WE: not on the flood risk listMK40 4WF: not on the flood risk listMK40 4WH: not on the flood risk listMK40 4WP: not on the flood risk listMK40 4WS: not on the flood risk listMK40 4WT: not on the flood risk listMK40 4WU: not on the flood risk listMK40 4WW: not on the flood risk listMK40 4XA: not on the flood risk listMK40 4XB: not on the flood risk listMK40 4XD: not on the flood risk listMK40 4XE: not on the flood risk listMK40 4XF: not on the flood risk listMK40 4XG: not on the flood risk listMK40 4XH: not on the flood risk listMK40 4XS: not on the flood risk listMK40 4XU: not on the flood risk listMK40 4XW: not on the flood risk listMK40 4XX: not on the flood risk listMK40 4XY: not on the flood risk listMK40 4YA: not on the flood risk listMK40 4YB: not on the flood risk listMK40 4ZA: not on the flood risk listMK40 4ZE: not on the flood risk listMK40 4ZF: not on the flood risk listMK40 4ZG: not on the flood risk listMK40 4ZH: not on the flood risk listMK40 4ZJ: not on the flood risk listMK40 4ZL: not on the flood risk listMK40 4ZN: not on the flood risk listMK40 4ZP: not on the flood risk listMK40 4ZQ: not on the flood risk listMK40 4ZR: not on the flood risk listMK40 4ZS: not on the flood risk listMK40 4GS: low flood risk at worstMK40 4JN: low flood risk at worstMK40 4JP: low flood risk at worstMK40 4JW: low flood risk at worstMK40 4JY: low flood risk at worstMK40 4LA: low flood risk at worstMK40 4RU: low flood risk at worstMK40 4RX: low flood risk at worstMK40 4SQ: low flood risk at worstMK40 4SR: low flood risk at worstMK40 4SS: low flood risk at worstMK40 4ST: low flood risk at worstMK40 4WJ: low flood risk at worstMK40 4WL: low flood risk at worstMK40 4WN: low flood risk at worstMK40 4WR: low flood risk at worstMK40 4JS: medium flood risk at worstMK40 4LU: medium flood risk at worstMK40 4AH: high flood riskMK40 4WG: high flood risk Great Denham Map of every postcode in the MK40 4 sector, by flood risk Of the 337 postcodes in the MK40 4 sector that ONS places, 2 have a home or business at high risk, 2 are at medium risk at worst, 16 are at low risk at worst and 317 are not on the Environment Agency's at-risk list. Places named: Great Denham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Great Denham
  • A home or business at high risk: 2
  • At medium risk at worst: 2
  • At low risk at worst: 16
  • At very low risk only: 0
  • Not on the at-risk list: 317

Of the 337 postcodes in the MK40 4 sector that ONS places, 2 have a home or business at high risk, 2 are at medium risk at worst, 16 are at low risk at worst and 317 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. 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.

MK40 4WG8 at high riskMK40 4AH2 at high risk

What do homes sell for in MK40 4?

Homes in MK40 4 sold for a typical £350,000 in the 12 months to August 2026, across 190 sales, down 8.1% on the 12 months before, HM Land Registry's figures show.

£350,000 typical price, the 12 months to August 2026
£381,000 12 months to August 2025
▼ down 8.1% on the 12 months before
  • Detached £534,995 61 sales
  • Semi-detached £348,748 56 sales
  • Terraced £325,000 41 sales
  • Flat or maisonette £227,500 32 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 MK40 4. 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 MK40 4

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.

MK40 4AAMK40 4ABMK40 4ADMK40 4AEMK40 4AFMK40 4AGMK40 4AHMK40 4AJMK40 4ALMK40 4ANMK40 4APMK40 4AQMK40 4ARMK40 4ASMK40 4ATMK40 4AUMK40 4AWMK40 4AXMK40 4AYMK40 4AZMK40 4BAMK40 4BBMK40 4BDMK40 4BEMK40 4BFMK40 4BGMK40 4BHMK40 4BJMK40 4BLMK40 4BNMK40 4BPMK40 4BQMK40 4BSMK40 4BTMK40 4BUMK40 4BWMK40 4BXMK40 4BYMK40 4BZMK40 4DAMK40 4DBMK40 4DDMK40 4DEMK40 4DFMK40 4DGMK40 4DHMK40 4DJMK40 4DLMK40 4DNMK40 4DPMK40 4DQMK40 4DRMK40 4DSMK40 4DTMK40 4DUMK40 4DWMK40 4DXMK40 4DYMK40 4DZMK40 4EAMK40 4EBMK40 4EDMK40 4EEMK40 4EFMK40 4EGMK40 4EHMK40 4EJMK40 4ELMK40 4ENMK40 4EPMK40 4EQMK40 4ERMK40 4ESMK40 4ETMK40 4EUMK40 4EWMK40 4EYMK40 4EZMK40 4FAMK40 4FBMK40 4FDMK40 4FEMK40 4FFMK40 4FGMK40 4FHMK40 4FJMK40 4FLMK40 4FNMK40 4FPMK40 4FQMK40 4FRMK40 4FSMK40 4FTMK40 4FUMK40 4FWMK40 4FXMK40 4FYMK40 4FZMK40 4GAMK40 4GBMK40 4GDMK40 4GEMK40 4GFMK40 4GGMK40 4GHMK40 4GJMK40 4GLMK40 4GNMK40 4GPMK40 4GQMK40 4GRMK40 4GSMK40 4GTMK40 4GUMK40 4GWMK40 4GXMK40 4GYMK40 4GZMK40 4HAMK40 4HDMK40 4HEMK40 4HFMK40 4HGMK40 4HHMK40 4HJMK40 4HLMK40 4HNMK40 4HPMK40 4HQMK40 4HRMK40 4HSMK40 4HUMK40 4HWMK40 4HXMK40 4HYMK40 4HZMK40 4JAMK40 4JDMK40 4JEMK40 4JFMK40 4JGMK40 4JHMK40 4JLMK40 4JNMK40 4JPMK40 4JSMK40 4JTMK40 4JUMK40 4JWMK40 4JXMK40 4JYMK40 4JZMK40 4LAMK40 4LBMK40 4LDMK40 4LEMK40 4LFMK40 4LGMK40 4LHMK40 4LJMK40 4LLMK40 4LNMK40 4LPMK40 4LQMK40 4LRMK40 4LSMK40 4LUMK40 4LWMK40 4LYMK40 4LZMK40 4NAMK40 4NBMK40 4NDMK40 4NEMK40 4NFMK40 4NGMK40 4NJMK40 4NLMK40 4NNMK40 4NPMK40 4NQMK40 4NRMK40 4NSMK40 4NTMK40 4NUMK40 4NWMK40 4NXMK40 4NYMK40 4NZMK40 4PAMK40 4PBMK40 4PDMK40 4PEMK40 4PFMK40 4PGMK40 4PHMK40 4PQMK40 4PRMK40 4PSMK40 4PTMK40 4PUMK40 4PXMK40 4PZMK40 4QAMK40 4QBMK40 4QDMK40 4QEMK40 4QGMK40 4QHMK40 4QJMK40 4QLMK40 4QNMK40 4QPMK40 4QQMK40 4QRMK40 4QSMK40 4QTMK40 4QUMK40 4QWMK40 4QXMK40 4QYMK40 4QZMK40 4RAMK40 4RBMK40 4REMK40 4RFMK40 4RGMK40 4RNMK40 4RPMK40 4RQMK40 4RRMK40 4RSMK40 4RTMK40 4RUMK40 4RWMK40 4RXMK40 4RYMK40 4RZMK40 4SAMK40 4SBMK40 4SDMK40 4SEMK40 4SFMK40 4SGMK40 4SHMK40 4SJMK40 4SLMK40 4SNMK40 4SPMK40 4SQMK40 4SRMK40 4SSMK40 4STMK40 4SUMK40 4SWMK40 4SXMK40 4SYMK40 4SZMK40 4TAMK40 4TBMK40 4TDMK40 4TEMK40 4TFMK40 4TGMK40 4THMK40 4TJMK40 4TLMK40 4TNMK40 4TPMK40 4TQMK40 4TRMK40 4TSMK40 4TTMK40 4TUMK40 4TWMK40 4TXMK40 4TYMK40 4TZMK40 4UAMK40 4UBMK40 4UDMK40 4UEMK40 4UFMK40 4UGMK40 4UHMK40 4UJMK40 4ULMK40 4UNMK40 4UPMK40 4UQMK40 4URMK40 4USMK40 4UTMK40 4UUMK40 4UWMK40 4UXMK40 4UYMK40 4UZMK40 4WEMK40 4WFMK40 4WGMK40 4WHMK40 4WJMK40 4WLMK40 4WNMK40 4WPMK40 4WRMK40 4WSMK40 4WTMK40 4WUMK40 4WWMK40 4XAMK40 4XBMK40 4XDMK40 4XEMK40 4XFMK40 4XGMK40 4XHMK40 4XSMK40 4XUMK40 4XWMK40 4XXMK40 4XYMK40 4YAMK40 4YBMK40 4ZAMK40 4ZEMK40 4ZFMK40 4ZGMK40 4ZHMK40 4ZJMK40 4ZLMK40 4ZNMK40 4ZPMK40 4ZQMK40 4ZRMK40 4ZS

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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