RM4 1 postcode sector in the RM4 district

RM4 1 is a sector of the RM4 district: every postcode that starts RM4 1. It has 160 postcodes in use, 3 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 RM4 1 sector, by flood risk

Map of every postcode in the RM4 1 sector, by flood risk Of the 160 postcodes in the RM4 1 sector that ONS places, 7 have a home or business at high risk, 5 are at medium risk at worst, 2 are at low risk at worst, 1 are at very low risk only and 145 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 6 postcodes at high or medium risk. One postcode lies beyond the edge and is listed under the map. Places named: Chigwell Row. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. M25M11 RM4 1AA: not on the flood risk listRM4 1AB: not on the flood risk listRM4 1AD: not on the flood risk listRM4 1AF: not on the flood risk listRM4 1AH: not on the flood risk listRM4 1AJ: not on the flood risk listRM4 1AL: not on the flood risk listRM4 1AS: not on the flood risk listRM4 1AT: not on the flood risk listRM4 1AU: not on the flood risk listRM4 1AX: not on the flood risk listRM4 1BA: not on the flood risk listRM4 1BB: not on the flood risk listRM4 1BD: not on the flood risk listRM4 1BF: not on the flood risk listRM4 1BL: not on the flood risk listRM4 1BS: not on the flood risk listRM4 1BT: not on the flood risk listRM4 1BU: not on the flood risk listRM4 1BX: not on the flood risk listRM4 1BY: not on the flood risk listRM4 1DA: not on the flood risk listRM4 1DD: not on the flood risk listRM4 1DE: not on the flood risk listRM4 1DF: not on the flood risk listRM4 1DG: not on the flood risk listRM4 1DH: not on the flood risk listRM4 1DJ: not on the flood risk listRM4 1DL: not on the flood risk listRM4 1DN: not on the flood risk listRM4 1DP: not on the flood risk listRM4 1DQ: not on the flood risk listRM4 1DR: not on the flood risk listRM4 1DS: not on the flood risk listRM4 1DU: not on the flood risk listRM4 1DW: not on the flood risk listRM4 1DY: not on the flood risk listRM4 1EE: not on the flood risk listRM4 1EG: not on the flood risk listRM4 1EH: not on the flood risk listRM4 1EL: not on the flood risk listRM4 1EP: not on the flood risk listRM4 1ER: not on the flood risk listRM4 1ES: not on the flood risk listRM4 1ET: not on the flood risk listRM4 1EU: not on the flood risk listRM4 1EW: not on the flood risk listRM4 1EY: not on the flood risk listRM4 1FA: not on the flood risk listRM4 1FB: not on the flood risk listRM4 1FD: not on the flood risk listRM4 1FE: not on the flood risk listRM4 1FF: not on the flood risk listRM4 1FH: not on the flood risk listRM4 1FL: not on the flood risk listRM4 1HA: not on the flood risk listRM4 1HB: not on the flood risk listRM4 1HD: not on the flood risk listRM4 1HE: not on the flood risk listRM4 1HG: not on the flood risk listRM4 1HH: not on the flood risk listRM4 1HJ: not on the flood risk listRM4 1HL: not on the flood risk listRM4 1HP: not on the flood risk listRM4 1HR: not on the flood risk listRM4 1HS: not on the flood risk listRM4 1HT: not on the flood risk listRM4 1JH: not on the flood risk listRM4 1JJ: not on the flood risk listRM4 1JL: not on the flood risk listRM4 1JP: not on the flood risk listRM4 1JR: not on the flood risk listRM4 1JS: not on the flood risk listRM4 1JT: not on the flood risk listRM4 1JU: not on the flood risk listRM4 1JX: not on the flood risk listRM4 1LA: not on the flood risk listRM4 1LB: not on the flood risk listRM4 1LD: not on the flood risk listRM4 1LE: not on the flood risk listRM4 1LT: not on the flood risk listRM4 1LU: not on the flood risk listRM4 1LX: not on the flood risk listRM4 1NA: not on the flood risk listRM4 1NB: not on the flood risk listRM4 1ND: not on the flood risk listRM4 1NH: not on the flood risk listRM4 1NJ: not on the flood risk listRM4 1NL: not on the flood risk listRM4 1NP: not on the flood risk listRM4 1NR: not on the flood risk listRM4 1PA: not on the flood risk listRM4 1PB: not on the flood risk listRM4 1PE: not on the flood risk listRM4 1PH: not on the flood risk listRM4 1PJ: not on the flood risk listRM4 1PL: not on the flood risk listRM4 1PP: not on the flood risk listRM4 1PR: not on the flood risk listRM4 1PS: not on the flood risk listRM4 1PT: not on the flood risk listRM4 1PU: not on the flood risk listRM4 1PX: not on the flood risk listRM4 1PY: not on the flood risk listRM4 1QA: not on the flood risk listRM4 1QB: not on the flood risk listRM4 1QH: not on the flood risk listRM4 1QJ: not on the flood risk listRM4 1QL: not on the flood risk listRM4 1QP: not on the flood risk listRM4 1QR: not on the flood risk listRM4 1QS: not on the flood risk listRM4 1RH: not on the flood risk listRM4 1RP: not on the flood risk listRM4 1RR: not on the flood risk listRM4 1RS: not on the flood risk listRM4 1RX: not on the flood risk listRM4 1SJ: not on the flood risk listRM4 1SL: not on the flood risk listRM4 1SP: not on the flood risk listRM4 1TA: not on the flood risk listRM4 1TD: not on the flood risk listRM4 1TU: not on the flood risk listRM4 1TX: not on the flood risk listRM4 1UE: not on the flood risk listRM4 1UP: not on the flood risk listRM4 1UQ: not on the flood risk listRM4 1UT: not on the flood risk listRM4 1UX: not on the flood risk listRM4 1XA: not on the flood risk listRM4 1XH: not on the flood risk listRM4 1XL: not on the flood risk listRM4 1XP: not on the flood risk listRM4 1XS: not on the flood risk listRM4 1XT: not on the flood risk listRM4 1XU: not on the flood risk listRM4 1XX: not on the flood risk listRM4 1UL: very low flood risk onlyRM4 1FG: low flood risk at worstRM4 1RD: low flood risk at worstRM4 1BN: medium flood risk at worstRM4 1EF: medium flood risk at worstRM4 1EJ: medium flood risk at worstRM4 1RT: medium flood risk at worstRM4 1UB: medium flood risk at worstRM4 1EX: high flood riskRM4 1ST: high flood riskRM4 1UA: high flood riskRM4 1UD: high flood riskRM4 1UH: high flood riskRM4 1UJ: high flood riskRM4 1YA: high flood risk Chigwell Row 6 postcodes at high or medium risk, outlined: this goes to RM4 1UA, the one with most homes and businesses at high risk6 postcodes at high or medium risk Map of every postcode in the RM4 1 sector, by flood risk Of the 160 postcodes in the RM4 1 sector that ONS places, 7 have a home or business at high risk, 5 are at medium risk at worst, 2 are at low risk at worst, 1 are at very low risk only and 145 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 6 postcodes at high or medium risk. One postcode lies beyond the edge and is listed under the map. Places named: Chigwell Row. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A113M11 Chigwell Row
  • A home or business at high risk: 7
  • At medium risk at worst: 5
  • At low risk at worst: 2
  • At very low risk only: 1
  • Not on the at-risk list: 145
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 160 postcodes in the RM4 1 sector that ONS places, 7 have a home or business at high risk, 5 are at medium risk at worst, 2 are at low risk at worst, 1 are at very low risk only and 145 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 400 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.

RM4 1UA4 at high riskRM4 1UH3 at high riskRM4 1YA3 at high riskRM4 1ST2 at high riskRM4 1UD1 at high riskRM4 1UJ1 at high riskRM4 1EX1 at high risk

Further out, not drawn

This postcode lies well apart from the rest, so the map is drawn without it to show the rest closer; it is in every count.

RM4 1UY

Where the postcodes at high or medium risk lie together

  • 6 postcodes at high or medium risk, outlined on the map. RM4 1UA, is the one with most homes and businesses at high risk.

What do homes sell for in RM4 1?

Homes in RM4 1 sold for a typical £580,000 in the 12 months to August 2026, across 39 sales, down 11.2% on the 12 months before, HM Land Registry's figures show.

£580,000 typical price, the 12 months to August 2026
£653,000 12 months to August 2025
▼ down 11.2% on the 12 months before
  • Detached £832,500 22 sales
  • Semi-detached £510,000 5 sales
  • Terraced £490,000 11 sales
  • Flat or maisonette 1 sale, 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 RM4 1. 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 RM4 1

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.

RM4 1AARM4 1ABRM4 1ADRM4 1AFRM4 1AHRM4 1AJRM4 1ALRM4 1APRM4 1ARRM4 1ASRM4 1ATRM4 1AURM4 1AXRM4 1BARM4 1BBRM4 1BDRM4 1BFRM4 1BLRM4 1BNRM4 1BSRM4 1BTRM4 1BURM4 1BXRM4 1BYRM4 1DARM4 1DDRM4 1DERM4 1DFRM4 1DGRM4 1DHRM4 1DJRM4 1DLRM4 1DNRM4 1DPRM4 1DQRM4 1DRRM4 1DSRM4 1DTRM4 1DURM4 1DWRM4 1DYRM4 1EERM4 1EFRM4 1EGRM4 1EHRM4 1EJRM4 1ELRM4 1EPRM4 1ERRM4 1ESRM4 1ETRM4 1EURM4 1EWRM4 1EXRM4 1EYRM4 1FARM4 1FBRM4 1FDRM4 1FERM4 1FFRM4 1FGRM4 1FHRM4 1FLRM4 1HARM4 1HBRM4 1HDRM4 1HERM4 1HGRM4 1HHRM4 1HJRM4 1HLRM4 1HPRM4 1HRRM4 1HSRM4 1HTRM4 1JHRM4 1JJRM4 1JLRM4 1JPRM4 1JRRM4 1JSRM4 1JTRM4 1JURM4 1JXRM4 1LARM4 1LBRM4 1LDRM4 1LERM4 1LTRM4 1LURM4 1LXRM4 1NARM4 1NBRM4 1NDRM4 1NHRM4 1NJRM4 1NLRM4 1NPRM4 1NRRM4 1PARM4 1PBRM4 1PERM4 1PHRM4 1PJRM4 1PLRM4 1PPRM4 1PRRM4 1PSRM4 1PTRM4 1PURM4 1PXRM4 1PYRM4 1QARM4 1QBRM4 1QHRM4 1QJRM4 1QLRM4 1QPRM4 1QRRM4 1QSRM4 1RDRM4 1RHRM4 1RPRM4 1RRRM4 1RSRM4 1RTRM4 1RXRM4 1SJRM4 1SLRM4 1SPRM4 1STRM4 1TARM4 1TDRM4 1TURM4 1TXRM4 1UARM4 1UBRM4 1UDRM4 1UERM4 1UHRM4 1UJRM4 1ULRM4 1UPRM4 1UQRM4 1UTRM4 1UURM4 1UXRM4 1UYRM4 1XARM4 1XBRM4 1XDRM4 1XHRM4 1XJRM4 1XLRM4 1XPRM4 1XSRM4 1XTRM4 1XURM4 1XXRM4 1YA

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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