CT20 3 postcode sector in the CT20 district

CT20 3 is a sector of the CT20 district: every postcode that starts CT20 3. It has 290 postcodes in use, 15 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 CT20 3 sector, by flood risk

Map of every postcode in the CT20 3 sector, by flood risk Of the 290 postcodes in the CT20 3 sector that ONS places, 13 have a home or business at high risk, 5 are at medium risk at worst, 1 are at low risk at worst and 271 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 15 postcodes at high or medium risk. Places named: Folkestone. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. CT20 3AA: not on the flood risk listCT20 3AD: not on the flood risk listCT20 3AF: not on the flood risk listCT20 3AN: not on the flood risk listCT20 3AR: not on the flood risk listCT20 3AS: not on the flood risk listCT20 3AT: not on the flood risk listCT20 3AU: not on the flood risk listCT20 3AW: not on the flood risk listCT20 3AX: not on the flood risk listCT20 3AY: not on the flood risk listCT20 3AZ: not on the flood risk listCT20 3BA: not on the flood risk listCT20 3BB: not on the flood risk listCT20 3BD: not on the flood risk listCT20 3BE: not on the flood risk listCT20 3BF: not on the flood risk listCT20 3BG: not on the flood risk listCT20 3BH: not on the flood risk listCT20 3BJ: not on the flood risk listCT20 3BL: not on the flood risk listCT20 3BN: not on the flood risk listCT20 3BP: not on the flood risk listCT20 3BQ: not on the flood risk listCT20 3BS: not on the flood risk listCT20 3BT: not on the flood risk listCT20 3BU: not on the flood risk listCT20 3BW: not on the flood risk listCT20 3DB: not on the flood risk listCT20 3DD: not on the flood risk listCT20 3DE: not on the flood risk listCT20 3DG: not on the flood risk listCT20 3DH: not on the flood risk listCT20 3DL: not on the flood risk listCT20 3DN: not on the flood risk listCT20 3DP: not on the flood risk listCT20 3DQ: not on the flood risk listCT20 3DR: not on the flood risk listCT20 3DU: not on the flood risk listCT20 3DW: not on the flood risk listCT20 3DX: not on the flood risk listCT20 3DZ: not on the flood risk listCT20 3EA: not on the flood risk listCT20 3EB: not on the flood risk listCT20 3ED: not on the flood risk listCT20 3EE: not on the flood risk listCT20 3EF: not on the flood risk listCT20 3EG: not on the flood risk listCT20 3EH: not on the flood risk listCT20 3EJ: not on the flood risk listCT20 3EL: not on the flood risk listCT20 3EN: not on the flood risk listCT20 3EP: not on the flood risk listCT20 3EQ: not on the flood risk listCT20 3ER: not on the flood risk listCT20 3ES: not on the flood risk listCT20 3ET: not on the flood risk listCT20 3EU: not on the flood risk listCT20 3EW: not on the flood risk listCT20 3EZ: not on the flood risk listCT20 3FD: not on the flood risk listCT20 3FE: not on the flood risk listCT20 3FF: not on the flood risk listCT20 3FH: not on the flood risk listCT20 3FJ: not on the flood risk listCT20 3FL: not on the flood risk listCT20 3FN: not on the flood risk listCT20 3FP: not on the flood risk listCT20 3FQ: not on the flood risk listCT20 3FR: not on the flood risk listCT20 3FS: not on the flood risk listCT20 3FT: not on the flood risk listCT20 3FU: not on the flood risk listCT20 3FW: not on the flood risk listCT20 3HA: not on the flood risk listCT20 3HD: not on the flood risk listCT20 3HF: not on the flood risk listCT20 3HH: not on the flood risk listCT20 3HL: not on the flood risk listCT20 3HN: not on the flood risk listCT20 3HQ: not on the flood risk listCT20 3HU: not on the flood risk listCT20 3HX: not on the flood risk listCT20 3JA: not on the flood risk listCT20 3JB: not on the flood risk listCT20 3JD: not on the flood risk listCT20 3JE: not on the flood risk listCT20 3JF: not on the flood risk listCT20 3JG: not on the flood risk listCT20 3JH: not on the flood risk listCT20 3JJ: not on the flood risk listCT20 3JL: not on the flood risk listCT20 3JN: not on the flood risk listCT20 3JP: not on the flood risk listCT20 3JQ: not on the flood risk listCT20 3JR: not on the flood risk listCT20 3JS: not on the flood risk listCT20 3JT: not on the flood risk listCT20 3JU: not on the flood risk listCT20 3JW: not on the flood risk listCT20 3JX: not on the flood risk listCT20 3JY: not on the flood risk listCT20 3JZ: not on the flood risk listCT20 3LA: not on the flood risk listCT20 3LB: not on the flood risk listCT20 3LD: not on the flood risk listCT20 3LE: not on the flood risk listCT20 3LF: not on the flood risk listCT20 3LG: not on the flood risk listCT20 3LH: not on the flood risk listCT20 3LJ: not on the flood risk listCT20 3LL: not on the flood risk listCT20 3LN: not on the flood risk listCT20 3LP: not on the flood risk listCT20 3LQ: not on the flood risk listCT20 3LR: not on the flood risk listCT20 3LS: not on the flood risk listCT20 3LT: not on the flood risk listCT20 3LU: not on the flood risk listCT20 3LW: not on the flood risk listCT20 3LX: not on the flood risk listCT20 3LY: not on the flood risk listCT20 3NA: not on the flood risk listCT20 3NB: not on the flood risk listCT20 3ND: not on the flood risk listCT20 3NE: not on the flood risk listCT20 3NF: not on the flood risk listCT20 3NG: not on the flood risk listCT20 3NH: not on the flood risk listCT20 3NJ: not on the flood risk listCT20 3NL: not on the flood risk listCT20 3NN: not on the flood risk listCT20 3NP: not on the flood risk listCT20 3NQ: not on the flood risk listCT20 3NR: not on the flood risk listCT20 3NS: not on the flood risk listCT20 3NT: not on the flood risk listCT20 3NU: not on the flood risk listCT20 3NW: not on the flood risk listCT20 3NX: not on the flood risk listCT20 3NY: not on the flood risk listCT20 3PA: not on the flood risk listCT20 3PB: not on the flood risk listCT20 3PD: not on the flood risk listCT20 3PE: not on the flood risk listCT20 3PF: not on the flood risk listCT20 3PG: not on the flood risk listCT20 3PH: not on the flood risk listCT20 3PJ: not on the flood risk listCT20 3PL: not on the flood risk listCT20 3PN: not on the flood risk listCT20 3PP: not on the flood risk listCT20 3PQ: not on the flood risk listCT20 3PR: not on the flood risk listCT20 3PS: not on the flood risk listCT20 3PT: not on the flood risk listCT20 3PU: not on the flood risk listCT20 3PW: not on the flood risk listCT20 3PX: not on the flood risk listCT20 3PY: not on the flood risk listCT20 3PZ: not on the flood risk listCT20 3QA: not on the flood risk listCT20 3QB: not on the flood risk listCT20 3QD: not on the flood risk listCT20 3QE: not on the flood risk listCT20 3QF: not on the flood risk listCT20 3QG: not on the flood risk listCT20 3QH: not on the flood risk listCT20 3QJ: not on the flood risk listCT20 3QL: not on the flood risk listCT20 3QN: not on the flood risk listCT20 3QP: not on the flood risk listCT20 3QQ: not on the flood risk listCT20 3QT: not on the flood risk listCT20 3QU: not on the flood risk listCT20 3QW: not on the flood risk listCT20 3QX: not on the flood risk listCT20 3QY: not on the flood risk listCT20 3RA: not on the flood risk listCT20 3RB: not on the flood risk listCT20 3RE: not on the flood risk listCT20 3RF: not on the flood risk listCT20 3RG: not on the flood risk listCT20 3RJ: not on the flood risk listCT20 3RL: not on the flood risk listCT20 3RN: not on the flood risk listCT20 3RR: not on the flood risk listCT20 3RU: not on the flood risk listCT20 3RW: not on the flood risk listCT20 3RY: not on the flood risk listCT20 3SA: not on the flood risk listCT20 3SB: not on the flood risk listCT20 3SD: not on the flood risk listCT20 3SE: not on the flood risk listCT20 3SF: not on the flood risk listCT20 3SH: not on the flood risk listCT20 3SJ: not on the flood risk listCT20 3SL: not on the flood risk listCT20 3SN: not on the flood risk listCT20 3SP: not on the flood risk listCT20 3SQ: not on the flood risk listCT20 3SR: not on the flood risk listCT20 3SS: not on the flood risk listCT20 3ST: not on the flood risk listCT20 3SY: not on the flood risk listCT20 3SZ: not on the flood risk listCT20 3TA: not on the flood risk listCT20 3TB: not on the flood risk listCT20 3TD: not on the flood risk listCT20 3TE: not on the flood risk listCT20 3TF: not on the flood risk listCT20 3TH: not on the flood risk listCT20 3TJ: not on the flood risk listCT20 3TL: not on the flood risk listCT20 3TQ: not on the flood risk listCT20 3TR: not on the flood risk listCT20 3TT: not on the flood risk listCT20 3TU: not on the flood risk listCT20 3TW: not on the flood risk listCT20 3TX: not on the flood risk listCT20 3TY: not on the flood risk listCT20 3TZ: not on the flood risk listCT20 3UA: not on the flood risk listCT20 3UB: not on the flood risk listCT20 3UE: not on the flood risk listCT20 3UF: not on the flood risk listCT20 3UG: not on the flood risk listCT20 3UH: not on the flood risk listCT20 3UJ: not on the flood risk listCT20 3UL: not on the flood risk listCT20 3UN: not on the flood risk listCT20 3US: not on the flood risk listCT20 3UW: not on the flood risk listCT20 3UZ: not on the flood risk listCT20 3WA: not on the flood risk listCT20 3WR: not on the flood risk listCT20 3WS: not on the flood risk listCT20 3WT: not on the flood risk listCT20 3WU: not on the flood risk listCT20 3WW: not on the flood risk listCT20 3XA: not on the flood risk listCT20 3XB: not on the flood risk listCT20 3XD: not on the flood risk listCT20 3XE: not on the flood risk listCT20 3XF: not on the flood risk listCT20 3XG: not on the flood risk listCT20 3XH: not on the flood risk listCT20 3XJ: not on the flood risk listCT20 3XL: not on the flood risk listCT20 3XN: not on the flood risk listCT20 3XP: not on the flood risk listCT20 3XR: not on the flood risk listCT20 3XW: not on the flood risk listCT20 3YU: not on the flood risk listCT20 3RS: low flood risk at worstCT20 3AE: medium flood risk at worstCT20 3BY: medium flood risk at worstCT20 3DS: medium flood risk at worstCT20 3DT: medium flood risk at worstCT20 3RT: medium flood risk at worstCT20 3AB: high flood riskCT20 3AG: high flood riskCT20 3AH: high flood riskCT20 3AJ: high flood riskCT20 3AL: high flood riskCT20 3AP: high flood riskCT20 3AQ: high flood riskCT20 3BX: high flood riskCT20 3BZ: high flood riskCT20 3DA: high flood riskCT20 3DY: high flood riskCT20 3RP: high flood riskCT20 3SU: high flood risk Folkestone 15 postcodes at high or medium risk, outlined: this goes to CT20 3RP, the one with most homes and businesses at high risk15 postcodes at high or medium risk Map of every postcode in the CT20 3 sector, by flood risk Of the 290 postcodes in the CT20 3 sector that ONS places, 13 have a home or business at high risk, 5 are at medium risk at worst, 1 are at low risk at worst and 271 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 15 postcodes at high or medium risk. Places named: Folkestone. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. M20 Folkestone
  • A home or business at high risk: 13
  • At medium risk at worst: 5
  • At low risk at worst: 1
  • At very low risk only: 0
  • Not on the at-risk list: 271
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 290 postcodes in the CT20 3 sector that ONS places, 13 have a home or business at high risk, 5 are at medium risk at worst, 1 are at low risk at worst and 271 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

13 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.

CT20 3RP24 at high riskCT20 3SU17 at high riskCT20 3BZ14 at high riskCT20 3DA12 at high riskCT20 3AG11 at high riskCT20 3BX11 at high riskCT20 3AL7 at high riskCT20 3AH6 at high riskCT20 3AB6 at high riskCT20 3DY3 at high riskCT20 3AQ2 at high riskCT20 3AP1 at high risk

Where the postcodes at high or medium risk lie together

  • 15 postcodes at high or medium risk, outlined on the map. CT20 3RP, is the one with most homes and businesses at high risk.

What do homes sell for in CT20 3?

Homes in CT20 3 sold for a typical £333,998 in the 12 months to August 2026, across 148 sales, up 1.2% on the 12 months before, HM Land Registry's figures show.

£333,998 typical price, the 12 months to August 2026
£330,000 12 months to August 2025
▲ up 1.2% on the 12 months before
  • Detached £414,998 30 sales
  • Semi-detached £352,500 54 sales
  • Terraced £305,000 36 sales
  • Flat or maisonette £197,500 28 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 CT20 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 CT20 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.

CT20 3AACT20 3ABCT20 3ADCT20 3AECT20 3AFCT20 3AGCT20 3AHCT20 3AJCT20 3ALCT20 3ANCT20 3APCT20 3AQCT20 3ARCT20 3ASCT20 3ATCT20 3AUCT20 3AWCT20 3AXCT20 3AYCT20 3AZCT20 3BACT20 3BBCT20 3BDCT20 3BECT20 3BFCT20 3BGCT20 3BHCT20 3BJCT20 3BLCT20 3BNCT20 3BPCT20 3BQCT20 3BSCT20 3BTCT20 3BUCT20 3BWCT20 3BXCT20 3BYCT20 3BZCT20 3DACT20 3DBCT20 3DDCT20 3DECT20 3DGCT20 3DHCT20 3DJCT20 3DLCT20 3DNCT20 3DPCT20 3DQCT20 3DRCT20 3DSCT20 3DTCT20 3DUCT20 3DWCT20 3DXCT20 3DYCT20 3DZCT20 3EACT20 3EBCT20 3EDCT20 3EECT20 3EFCT20 3EGCT20 3EHCT20 3EJCT20 3ELCT20 3ENCT20 3EPCT20 3EQCT20 3ERCT20 3ESCT20 3ETCT20 3EUCT20 3EWCT20 3EZCT20 3FDCT20 3FECT20 3FFCT20 3FHCT20 3FJCT20 3FLCT20 3FNCT20 3FPCT20 3FQCT20 3FRCT20 3FSCT20 3FTCT20 3FUCT20 3FWCT20 3HACT20 3HDCT20 3HFCT20 3HHCT20 3HJCT20 3HLCT20 3HNCT20 3HQCT20 3HTCT20 3HUCT20 3HXCT20 3HYCT20 3JACT20 3JBCT20 3JDCT20 3JECT20 3JFCT20 3JGCT20 3JHCT20 3JJCT20 3JLCT20 3JNCT20 3JPCT20 3JQCT20 3JRCT20 3JSCT20 3JTCT20 3JUCT20 3JWCT20 3JXCT20 3JYCT20 3JZCT20 3LACT20 3LBCT20 3LDCT20 3LECT20 3LFCT20 3LGCT20 3LHCT20 3LJCT20 3LLCT20 3LNCT20 3LPCT20 3LQCT20 3LRCT20 3LSCT20 3LTCT20 3LUCT20 3LWCT20 3LXCT20 3LYCT20 3NACT20 3NBCT20 3NDCT20 3NECT20 3NFCT20 3NGCT20 3NHCT20 3NJCT20 3NLCT20 3NNCT20 3NPCT20 3NQCT20 3NRCT20 3NSCT20 3NTCT20 3NUCT20 3NWCT20 3NXCT20 3NYCT20 3PACT20 3PBCT20 3PDCT20 3PECT20 3PFCT20 3PGCT20 3PHCT20 3PJCT20 3PLCT20 3PNCT20 3PPCT20 3PQCT20 3PRCT20 3PSCT20 3PTCT20 3PUCT20 3PWCT20 3PXCT20 3PYCT20 3PZCT20 3QACT20 3QBCT20 3QDCT20 3QECT20 3QFCT20 3QGCT20 3QHCT20 3QJCT20 3QLCT20 3QNCT20 3QPCT20 3QQCT20 3QTCT20 3QUCT20 3QWCT20 3QXCT20 3QYCT20 3RACT20 3RBCT20 3RDCT20 3RECT20 3RFCT20 3RGCT20 3RJCT20 3RLCT20 3RNCT20 3RPCT20 3RRCT20 3RSCT20 3RTCT20 3RUCT20 3RWCT20 3RYCT20 3SACT20 3SBCT20 3SDCT20 3SECT20 3SFCT20 3SHCT20 3SJCT20 3SLCT20 3SNCT20 3SPCT20 3SQCT20 3SRCT20 3SSCT20 3STCT20 3SUCT20 3SYCT20 3SZCT20 3TACT20 3TBCT20 3TDCT20 3TECT20 3TFCT20 3THCT20 3TJCT20 3TLCT20 3TQCT20 3TRCT20 3TTCT20 3TUCT20 3TWCT20 3TXCT20 3TYCT20 3TZCT20 3UACT20 3UBCT20 3UDCT20 3UECT20 3UFCT20 3UGCT20 3UHCT20 3UJCT20 3ULCT20 3UNCT20 3USCT20 3UTCT20 3UWCT20 3UZCT20 3WACT20 3WRCT20 3WSCT20 3WTCT20 3WUCT20 3WWCT20 3XACT20 3XBCT20 3XDCT20 3XECT20 3XFCT20 3XGCT20 3XHCT20 3XJCT20 3XLCT20 3XNCT20 3XPCT20 3XRCT20 3XWCT20 3YUCT20 3YYCT20 3ZBCT20 3ZDCT20 3ZECT20 3ZFCT20 3ZGCT20 3ZJCT20 3ZLCT20 3ZNCT20 3ZP

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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