SY11 3 postcode sector in the SY11 district

SY11 3 is a sector of the SY11 district: every postcode that starts SY11 3. It has 216 postcodes in use, one of them a large-user postcode. 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 SY11 3 sector, by flood risk

Map of every postcode in the SY11 3 sector, by flood risk Of the 216 postcodes in the SY11 3 sector that ONS places, 11 have a home or business at high risk, 14 are at low risk at worst and 191 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 8 postcodes at high or medium risk. Places named: Gobowen, Chirk, St Martins, Weston Rhyn. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A5 SY11 3AA: not on the flood risk listSY11 3AB: not on the flood risk listSY11 3AD: not on the flood risk listSY11 3AE: not on the flood risk listSY11 3AF: not on the flood risk listSY11 3AG: not on the flood risk listSY11 3AH: not on the flood risk listSY11 3AJ: not on the flood risk listSY11 3AL: not on the flood risk listSY11 3AN: not on the flood risk listSY11 3AP: not on the flood risk listSY11 3AQ: not on the flood risk listSY11 3AR: not on the flood risk listSY11 3AS: not on the flood risk listSY11 3AT: not on the flood risk listSY11 3AU: not on the flood risk listSY11 3AW: not on the flood risk listSY11 3AX: not on the flood risk listSY11 3AY: not on the flood risk listSY11 3AZ: not on the flood risk listSY11 3BA: not on the flood risk listSY11 3BB: not on the flood risk listSY11 3BD: not on the flood risk listSY11 3BE: not on the flood risk listSY11 3BF: not on the flood risk listSY11 3BG: not on the flood risk listSY11 3BH: not on the flood risk listSY11 3BL: not on the flood risk listSY11 3BN: not on the flood risk listSY11 3BP: not on the flood risk listSY11 3BQ: not on the flood risk listSY11 3BT: not on the flood risk listSY11 3BU: not on the flood risk listSY11 3BW: not on the flood risk listSY11 3BX: not on the flood risk listSY11 3BY: not on the flood risk listSY11 3BZ: not on the flood risk listSY11 3DA: not on the flood risk listSY11 3DB: not on the flood risk listSY11 3DD: not on the flood risk listSY11 3DE: not on the flood risk listSY11 3DF: not on the flood risk listSY11 3DG: not on the flood risk listSY11 3DH: not on the flood risk listSY11 3DJ: not on the flood risk listSY11 3DL: not on the flood risk listSY11 3DN: not on the flood risk listSY11 3DP: not on the flood risk listSY11 3DQ: not on the flood risk listSY11 3DR: not on the flood risk listSY11 3DS: not on the flood risk listSY11 3DT: not on the flood risk listSY11 3DU: not on the flood risk listSY11 3DW: not on the flood risk listSY11 3DX: not on the flood risk listSY11 3DY: not on the flood risk listSY11 3DZ: not on the flood risk listSY11 3EA: not on the flood risk listSY11 3EB: not on the flood risk listSY11 3ED: not on the flood risk listSY11 3EE: not on the flood risk listSY11 3EF: not on the flood risk listSY11 3EG: not on the flood risk listSY11 3EH: not on the flood risk listSY11 3EJ: not on the flood risk listSY11 3EL: not on the flood risk listSY11 3EP: not on the flood risk listSY11 3EQ: not on the flood risk listSY11 3ER: not on the flood risk listSY11 3ES: not on the flood risk listSY11 3ET: not on the flood risk listSY11 3EU: not on the flood risk listSY11 3EX: not on the flood risk listSY11 3EY: not on the flood risk listSY11 3FA: not on the flood risk listSY11 3FB: not on the flood risk listSY11 3FD: not on the flood risk listSY11 3FE: not on the flood risk listSY11 3FF: not on the flood risk listSY11 3FH: not on the flood risk listSY11 3FJ: not on the flood risk listSY11 3FL: not on the flood risk listSY11 3FN: not on the flood risk listSY11 3FP: not on the flood risk listSY11 3FQ: not on the flood risk listSY11 3FS: not on the flood risk listSY11 3FT: not on the flood risk listSY11 3FX: not on the flood risk listSY11 3GA: not on the flood risk listSY11 3GX: not on the flood risk listSY11 3HA: not on the flood risk listSY11 3HB: not on the flood risk listSY11 3HD: not on the flood risk listSY11 3HE: not on the flood risk listSY11 3HF: not on the flood risk listSY11 3HG: not on the flood risk listSY11 3HH: not on the flood risk listSY11 3HJ: not on the flood risk listSY11 3HL: not on the flood risk listSY11 3HN: not on the flood risk listSY11 3HP: not on the flood risk listSY11 3HQ: not on the flood risk listSY11 3HR: not on the flood risk listSY11 3HS: not on the flood risk listSY11 3HU: not on the flood risk listSY11 3HW: not on the flood risk listSY11 3HX: not on the flood risk listSY11 3HY: not on the flood risk listSY11 3HZ: not on the flood risk listSY11 3JF: not on the flood risk listSY11 3JG: not on the flood risk listSY11 3JH: not on the flood risk listSY11 3JJ: not on the flood risk listSY11 3JN: not on the flood risk listSY11 3JS: not on the flood risk listSY11 3JT: not on the flood risk listSY11 3JU: not on the flood risk listSY11 3JX: not on the flood risk listSY11 3LA: not on the flood risk listSY11 3LB: not on the flood risk listSY11 3LD: not on the flood risk listSY11 3LE: not on the flood risk listSY11 3LF: not on the flood risk listSY11 3LG: not on the flood risk listSY11 3LJ: not on the flood risk listSY11 3LL: not on the flood risk listSY11 3LN: not on the flood risk listSY11 3LT: not on the flood risk listSY11 3LU: not on the flood risk listSY11 3LX: not on the flood risk listSY11 3LY: not on the flood risk listSY11 3LZ: not on the flood risk listSY11 3NA: not on the flood risk listSY11 3NB: not on the flood risk listSY11 3ND: not on the flood risk listSY11 3NE: not on the flood risk listSY11 3NF: not on the flood risk listSY11 3NG: not on the flood risk listSY11 3NH: not on the flood risk listSY11 3NJ: not on the flood risk listSY11 3NN: not on the flood risk listSY11 3NQ: not on the flood risk listSY11 3NR: not on the flood risk listSY11 3NS: not on the flood risk listSY11 3NT: not on the flood risk listSY11 3NU: not on the flood risk listSY11 3NX: not on the flood risk listSY11 3NY: not on the flood risk listSY11 3PA: not on the flood risk listSY11 3PB: not on the flood risk listSY11 3PD: not on the flood risk listSY11 3PE: not on the flood risk listSY11 3PF: not on the flood risk listSY11 3PG: not on the flood risk listSY11 3PH: not on the flood risk listSY11 3PJ: not on the flood risk listSY11 3PL: not on the flood risk listSY11 3PN: not on the flood risk listSY11 3PP: not on the flood risk listSY11 3PR: not on the flood risk listSY11 3PS: not on the flood risk listSY11 3PT: not on the flood risk listSY11 3PX: not on the flood risk listSY11 3PY: not on the flood risk listSY11 3PZ: not on the flood risk listSY11 3QA: not on the flood risk listSY11 3QB: not on the flood risk listSY11 3QD: not on the flood risk listSY11 3QE: not on the flood risk listSY11 3QF: not on the flood risk listSY11 3QG: not on the flood risk listSY11 3QH: not on the flood risk listSY11 3QL: not on the flood risk listSY11 3QQ: not on the flood risk listSY11 3QT: not on the flood risk listSY11 3EN: low flood risk at worstSY11 3GW: low flood risk at worstSY11 3GY: low flood risk at worstSY11 3JY: low flood risk at worstSY11 3JZ: low flood risk at worstSY11 3LH: low flood risk at worstSY11 3LW: low flood risk at worstSY11 3LR: low flood risk at worstSY11 3LS: low flood risk at worstSY11 3QP: low flood risk at worstSY11 3QR: low flood risk at worstSY11 3QS: low flood risk at worstSY11 3EW: high flood riskSY11 3GZ: high flood riskSY11 3JA: high flood riskSY11 3JB: high flood riskSY11 3JD: high flood riskSY11 3JE: high flood riskSY11 3JL: high flood riskSY11 3JR: high flood riskSY11 3PU: high flood riskSY11 3PW: high flood riskSY11 3QN: high flood risk GobowenChirkSt MartinsWeston Rhyn 8 postcodes at high or medium risk, outlined: this goes to SY11 3QN, the one with most homes and businesses at high risk8 postcodes at high or medium risk Map of every postcode in the SY11 3 sector, by flood risk Of the 216 postcodes in the SY11 3 sector that ONS places, 11 have a home or business at high risk, 14 are at low risk at worst and 191 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 8 postcodes at high or medium risk. Places named: Gobowen, St Martins. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A5 GobowenSt Martins
  • A home or business at high risk: 11
  • At medium risk at worst: 0
  • At low risk at worst: 14
  • At very low risk only: 0
  • Not on the at-risk list: 191
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 216 postcodes in the SY11 3 sector that ONS places, 11 have a home or business at high risk, 14 are at low risk at worst and 191 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 160 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.

SY11 3QN17 at high riskSY11 3PU15 at high riskSY11 3JL11 at high riskSY11 3JB10 at high riskSY11 3JD9 at high riskSY11 3JR4 at high riskSY11 3EW3 at high riskSY11 3GZ1 at high riskSY11 3JA1 at high riskSY11 3JE1 at high riskSY11 3PW1 at high risk

Where the postcodes at high or medium risk lie together

  • 8 postcodes at high or medium risk, outlined on the map. SY11 3QN, is the one with most homes and businesses at high risk.

What do homes sell for in SY11 3?

Homes in SY11 3 sold for a typical £225,000 in the 12 months to August 2026, across 75 sales, up 1.1% on the 12 months before, HM Land Registry's figures show.

£225,000 typical price, the 12 months to August 2026
£222,500 12 months to August 2025
▲ up 1.1% on the 12 months before
  • Detached £354,975 28 sales
  • Semi-detached £207,000 31 sales
  • Terraced £181,000 14 sales
  • Flat or maisonette 2 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 SY11 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 SY11 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.

SY11 3AASY11 3ABSY11 3ADSY11 3AESY11 3AFSY11 3AGSY11 3AHSY11 3AJSY11 3ALSY11 3ANSY11 3APSY11 3AQSY11 3ARSY11 3ASSY11 3ATSY11 3AUSY11 3AWSY11 3AXSY11 3AYSY11 3AZSY11 3BASY11 3BBSY11 3BDSY11 3BESY11 3BFSY11 3BGSY11 3BHSY11 3BJSY11 3BLSY11 3BNSY11 3BPSY11 3BQSY11 3BSSY11 3BTSY11 3BUSY11 3BWSY11 3BXSY11 3BYSY11 3BZSY11 3DASY11 3DBSY11 3DDSY11 3DESY11 3DFSY11 3DGSY11 3DHSY11 3DJSY11 3DLSY11 3DNSY11 3DPSY11 3DQSY11 3DRSY11 3DSSY11 3DTSY11 3DUSY11 3DWSY11 3DXSY11 3DYSY11 3DZSY11 3EASY11 3EBSY11 3EDSY11 3EESY11 3EFSY11 3EGSY11 3EHSY11 3EJSY11 3ELSY11 3ENSY11 3EPSY11 3EQSY11 3ERSY11 3ESSY11 3ETSY11 3EUSY11 3EWSY11 3EXSY11 3EYSY11 3EZSY11 3FASY11 3FBSY11 3FDSY11 3FESY11 3FFSY11 3FGSY11 3FHSY11 3FJSY11 3FLSY11 3FNSY11 3FPSY11 3FQSY11 3FRSY11 3FSSY11 3FTSY11 3FUSY11 3FXSY11 3GASY11 3GWSY11 3GXSY11 3GYSY11 3GZSY11 3HASY11 3HBSY11 3HDSY11 3HESY11 3HFSY11 3HGSY11 3HHSY11 3HJSY11 3HLSY11 3HNSY11 3HPSY11 3HQSY11 3HRSY11 3HSSY11 3HTSY11 3HUSY11 3HWSY11 3HXSY11 3HYSY11 3HZSY11 3JASY11 3JBSY11 3JDSY11 3JESY11 3JFSY11 3JGSY11 3JHSY11 3JJSY11 3JLSY11 3JNSY11 3JPSY11 3JQSY11 3JRSY11 3JSSY11 3JTSY11 3JUSY11 3JWSY11 3JXSY11 3JYSY11 3JZSY11 3LASY11 3LBSY11 3LDSY11 3LESY11 3LFSY11 3LGSY11 3LHSY11 3LJSY11 3LLSY11 3LNSY11 3LPSY11 3LQSY11 3LRSY11 3LSSY11 3LTSY11 3LUSY11 3LWSY11 3LXSY11 3LYSY11 3LZSY11 3NASY11 3NBSY11 3NDSY11 3NESY11 3NFSY11 3NGSY11 3NHSY11 3NJSY11 3NLSY11 3NNSY11 3NPSY11 3NQSY11 3NRSY11 3NSSY11 3NTSY11 3NUSY11 3NWSY11 3NXSY11 3NYSY11 3NZSY11 3PASY11 3PBSY11 3PDSY11 3PESY11 3PFSY11 3PGSY11 3PHSY11 3PJSY11 3PLSY11 3PNSY11 3PPSY11 3PQSY11 3PRSY11 3PSSY11 3PTSY11 3PUSY11 3PWSY11 3PXSY11 3PYSY11 3PZSY11 3QASY11 3QBSY11 3QDSY11 3QESY11 3QFSY11 3QGSY11 3QHSY11 3QJSY11 3QLSY11 3QNSY11 3QPSY11 3QQSY11 3QRSY11 3QSSY11 3QT

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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