MK18 3 postcode sector in the MK18 district

MK18 3 is a sector of the MK18 district: every postcode that starts MK18 3. It has 238 postcodes in use, 4 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 MK18 3 sector, by flood risk

Map of every postcode in the MK18 3 sector, by flood risk Of the 238 postcodes in the MK18 3 sector that ONS places, 1 have a home or business at high risk and 237 are not on the Environment Agency's at-risk list. Places named: Winslow. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A413 MK18 3AB: not on the flood risk listMK18 3AF: not on the flood risk listMK18 3AH: not on the flood risk listMK18 3AL: not on the flood risk listMK18 3AN: not on the flood risk listMK18 3AP: not on the flood risk listMK18 3AR: not on the flood risk listMK18 3AS: not on the flood risk listMK18 3AT: not on the flood risk listMK18 3AU: not on the flood risk listMK18 3AX: not on the flood risk listMK18 3AY: not on the flood risk listMK18 3AZ: not on the flood risk listMK18 3BA: not on the flood risk listMK18 3BB: not on the flood risk listMK18 3BD: not on the flood risk listMK18 3BG: not on the flood risk listMK18 3BH: not on the flood risk listMK18 3BJ: not on the flood risk listMK18 3BL: not on the flood risk listMK18 3BN: not on the flood risk listMK18 3BP: not on the flood risk listMK18 3BS: not on the flood risk listMK18 3BT: not on the flood risk listMK18 3BU: not on the flood risk listMK18 3BW: not on the flood risk listMK18 3BX: not on the flood risk listMK18 3DA: not on the flood risk listMK18 3DB: not on the flood risk listMK18 3DE: not on the flood risk listMK18 3DF: not on the flood risk listMK18 3DG: not on the flood risk listMK18 3DH: not on the flood risk listMK18 3DL: not on the flood risk listMK18 3DN: not on the flood risk listMK18 3DQ: not on the flood risk listMK18 3DR: not on the flood risk listMK18 3DS: not on the flood risk listMK18 3DT: not on the flood risk listMK18 3DU: not on the flood risk listMK18 3DW: not on the flood risk listMK18 3DX: not on the flood risk listMK18 3DY: not on the flood risk listMK18 3DZ: not on the flood risk listMK18 3EA: not on the flood risk listMK18 3EB: not on the flood risk listMK18 3ED: not on the flood risk listMK18 3EJ: not on the flood risk listMK18 3EL: not on the flood risk listMK18 3EN: not on the flood risk listMK18 3EP: not on the flood risk listMK18 3ES: not on the flood risk listMK18 3ET: not on the flood risk listMK18 3EU: not on the flood risk listMK18 3EW: not on the flood risk listMK18 3EX: not on the flood risk listMK18 3FA: not on the flood risk listMK18 3FD: not on the flood risk listMK18 3FE: not on the flood risk listMK18 3FH: not on the flood risk listMK18 3FJ: not on the flood risk listMK18 3FL: not on the flood risk listMK18 3FN: not on the flood risk listMK18 3FP: not on the flood risk listMK18 3FQ: not on the flood risk listMK18 3FR: not on the flood risk listMK18 3FS: not on the flood risk listMK18 3FT: not on the flood risk listMK18 3FU: not on the flood risk listMK18 3FW: not on the flood risk listMK18 3FX: not on the flood risk listMK18 3FY: not on the flood risk listMK18 3GA: not on the flood risk listMK18 3GD: not on the flood risk listMK18 3GF: not on the flood risk listMK18 3GG: not on the flood risk listMK18 3GH: not on the flood risk listMK18 3GL: not on the flood risk listMK18 3GN: not on the flood risk listMK18 3GS: not on the flood risk listMK18 3GT: not on the flood risk listMK18 3GU: not on the flood risk listMK18 3GX: not on the flood risk listMK18 3GY: not on the flood risk listMK18 3GZ: not on the flood risk listMK18 3HB: not on the flood risk listMK18 3HE: not on the flood risk listMK18 3HJ: not on the flood risk listMK18 3HL: not on the flood risk listMK18 3HN: not on the flood risk listMK18 3HP: not on the flood risk listMK18 3HR: not on the flood risk listMK18 3HS: not on the flood risk listMK18 3HT: not on the flood risk listMK18 3HU: not on the flood risk listMK18 3HW: not on the flood risk listMK18 3HX: not on the flood risk listMK18 3HY: not on the flood risk listMK18 3HZ: not on the flood risk listMK18 3JA: not on the flood risk listMK18 3JD: not on the flood risk listMK18 3JE: not on the flood risk listMK18 3JH: not on the flood risk listMK18 3JJ: not on the flood risk listMK18 3JL: not on the flood risk listMK18 3JN: not on the flood risk listMK18 3JP: not on the flood risk listMK18 3JR: not on the flood risk listMK18 3JS: not on the flood risk listMK18 3JT: not on the flood risk listMK18 3JU: not on the flood risk listMK18 3JW: not on the flood risk listMK18 3JX: not on the flood risk listMK18 3JY: not on the flood risk listMK18 3JZ: not on the flood risk listMK18 3LA: not on the flood risk listMK18 3LB: not on the flood risk listMK18 3LD: not on the flood risk listMK18 3LE: not on the flood risk listMK18 3LF: not on the flood risk listMK18 3LG: not on the flood risk listMK18 3LH: not on the flood risk listMK18 3LJ: not on the flood risk listMK18 3LL: not on the flood risk listMK18 3LN: not on the flood risk listMK18 3LQ: not on the flood risk listMK18 3LR: not on the flood risk listMK18 3LS: not on the flood risk listMK18 3LT: not on the flood risk listMK18 3LU: not on the flood risk listMK18 3LW: not on the flood risk listMK18 3LX: not on the flood risk listMK18 3LY: not on the flood risk listMK18 3LZ: not on the flood risk listMK18 3NA: not on the flood risk listMK18 3NB: not on the flood risk listMK18 3ND: not on the flood risk listMK18 3NF: not on the flood risk listMK18 3NG: not on the flood risk listMK18 3NJ: not on the flood risk listMK18 3NL: not on the flood risk listMK18 3NN: not on the flood risk listMK18 3NP: not on the flood risk listMK18 3NR: not on the flood risk listMK18 3NS: not on the flood risk listMK18 3NT: not on the flood risk listMK18 3NU: not on the flood risk listMK18 3PA: not on the flood risk listMK18 3PB: not on the flood risk listMK18 3PD: not on the flood risk listMK18 3PE: not on the flood risk listMK18 3PF: not on the flood risk listMK18 3PG: not on the flood risk listMK18 3PH: not on the flood risk listMK18 3PJ: not on the flood risk listMK18 3PL: not on the flood risk listMK18 3PN: not on the flood risk listMK18 3PP: not on the flood risk listMK18 3PQ: not on the flood risk listMK18 3PR: not on the flood risk listMK18 3PS: not on the flood risk listMK18 3PT: not on the flood risk listMK18 3PU: not on the flood risk listMK18 3PX: not on the flood risk listMK18 3PY: not on the flood risk listMK18 3PZ: not on the flood risk listMK18 3QA: not on the flood risk listMK18 3QD: not on the flood risk listMK18 3QF: not on the flood risk listMK18 3QG: not on the flood risk listMK18 3QH: not on the flood risk listMK18 3QL: not on the flood risk listMK18 3QQ: not on the flood risk listMK18 3QR: not on the flood risk listMK18 3QS: not on the flood risk listMK18 3QT: not on the flood risk listMK18 3RA: not on the flood risk listMK18 3RD: not on the flood risk listMK18 3RG: not on the flood risk listMK18 3RH: not on the flood risk listMK18 3RJ: not on the flood risk listMK18 3RQ: not on the flood risk listMK18 3RR: not on the flood risk listMK18 3RY: not on the flood risk listMK18 3SA: not on the flood risk listMK18 3SB: not on the flood risk listMK18 3SE: not on the flood risk listMK18 3SJ: not on the flood risk listMK18 3SL: not on the flood risk listMK18 3SN: not on the flood risk listMK18 3SQ: not on the flood risk listMK18 3SR: not on the flood risk listMK18 3SU: not on the flood risk listMK18 3SW: not on the flood risk listMK18 3NQ: high flood risk Winslow Map of every postcode in the MK18 3 sector, by flood risk Of the 238 postcodes in the MK18 3 sector that ONS places, 1 have a home or business at high risk and 237 are not on the Environment Agency's at-risk list. Places named: Winslow. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A413 Winslow
  • A home or business at high risk: 1
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 237

Of the 238 postcodes in the MK18 3 sector that ONS places, 1 have a home or business at high risk and 237 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.

MK18 3NQ1 at high risk

What do homes sell for in MK18 3?

Homes in MK18 3 sold for a typical £385,000 in the 12 months to August 2026, across 80 sales, down 6.9% on the 12 months before, HM Land Registry's figures show.

£385,000 typical price, the 12 months to August 2026
£413,648 12 months to August 2025
▼ down 6.9% on the 12 months before
  • Detached £530,000 27 sales
  • Semi-detached £372,500 18 sales
  • Terraced £295,000 31 sales
  • Flat or maisonette 4 sales, too few to price

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 MK18 3. 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 MK18 3

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.

MK18 3ABMK18 3AFMK18 3AHMK18 3AJMK18 3ALMK18 3ANMK18 3APMK18 3AQMK18 3ARMK18 3ASMK18 3ATMK18 3AUMK18 3AWMK18 3AXMK18 3AYMK18 3AZMK18 3BAMK18 3BBMK18 3BDMK18 3BEMK18 3BGMK18 3BHMK18 3BJMK18 3BLMK18 3BNMK18 3BPMK18 3BQMK18 3BSMK18 3BTMK18 3BUMK18 3BWMK18 3BXMK18 3BYMK18 3DAMK18 3DBMK18 3DEMK18 3DFMK18 3DGMK18 3DHMK18 3DJMK18 3DLMK18 3DNMK18 3DPMK18 3DQMK18 3DRMK18 3DSMK18 3DTMK18 3DUMK18 3DWMK18 3DXMK18 3DYMK18 3DZMK18 3EAMK18 3EBMK18 3EDMK18 3EHMK18 3EJMK18 3ELMK18 3ENMK18 3EPMK18 3ERMK18 3ESMK18 3ETMK18 3EUMK18 3EWMK18 3EXMK18 3FAMK18 3FDMK18 3FEMK18 3FHMK18 3FJMK18 3FLMK18 3FNMK18 3FPMK18 3FQMK18 3FRMK18 3FSMK18 3FTMK18 3FUMK18 3FWMK18 3FXMK18 3FYMK18 3FZMK18 3GAMK18 3GBMK18 3GDMK18 3GEMK18 3GFMK18 3GGMK18 3GHMK18 3GJMK18 3GLMK18 3GNMK18 3GPMK18 3GQMK18 3GRMK18 3GSMK18 3GTMK18 3GUMK18 3GWMK18 3GXMK18 3GYMK18 3GZMK18 3HAMK18 3HBMK18 3HDMK18 3HEMK18 3HFMK18 3HHMK18 3HJMK18 3HLMK18 3HNMK18 3HPMK18 3HRMK18 3HSMK18 3HTMK18 3HUMK18 3HWMK18 3HXMK18 3HYMK18 3HZMK18 3JAMK18 3JBMK18 3JDMK18 3JEMK18 3JFMK18 3JGMK18 3JHMK18 3JJMK18 3JLMK18 3JNMK18 3JPMK18 3JQMK18 3JRMK18 3JSMK18 3JTMK18 3JUMK18 3JWMK18 3JXMK18 3JYMK18 3JZMK18 3LAMK18 3LBMK18 3LDMK18 3LEMK18 3LFMK18 3LGMK18 3LHMK18 3LJMK18 3LLMK18 3LNMK18 3LQMK18 3LRMK18 3LSMK18 3LTMK18 3LUMK18 3LWMK18 3LXMK18 3LYMK18 3LZMK18 3NAMK18 3NBMK18 3NDMK18 3NEMK18 3NFMK18 3NGMK18 3NHMK18 3NJMK18 3NLMK18 3NNMK18 3NPMK18 3NQMK18 3NRMK18 3NSMK18 3NTMK18 3NUMK18 3NWMK18 3PAMK18 3PBMK18 3PDMK18 3PEMK18 3PFMK18 3PGMK18 3PHMK18 3PJMK18 3PLMK18 3PNMK18 3PPMK18 3PQMK18 3PRMK18 3PSMK18 3PTMK18 3PUMK18 3PWMK18 3PXMK18 3PYMK18 3PZMK18 3QAMK18 3QBMK18 3QDMK18 3QFMK18 3QGMK18 3QHMK18 3QJMK18 3QLMK18 3QPMK18 3QQMK18 3QRMK18 3QSMK18 3QTMK18 3QUMK18 3QWMK18 3QZMK18 3RAMK18 3RDMK18 3RGMK18 3RHMK18 3RJMK18 3RQMK18 3RRMK18 3RSMK18 3RWMK18 3RXMK18 3RYMK18 3SAMK18 3SBMK18 3SDMK18 3SEMK18 3SJMK18 3SLMK18 3SNMK18 3SPMK18 3SQMK18 3SRMK18 3SUMK18 3SWMK18 3YZMK18 3ZX

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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