SY23 4 postcode sector in the SY23 district

SY23 4 is a sector of the SY23 district: every postcode that starts SY23 4. It has 237 postcodes in use.

Not sure what a sector is? UK postcode format explained.

Every postcode in the SY23 4 sector, and which are new since 2020

Map of every postcode in the SY23 4 sector, by new since 2020 Of the 237 postcodes in the SY23 4 sector that ONS places, 2 are new since 2020 and 235 were in use before 2020. One postcode lies beyond the edge and is listed under the map. Places named: Ystwyth, Llanfarian. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. A4120 SY23 4AB: before 2020SY23 4AD: before 2020SY23 4AE: before 2020SY23 4AF: before 2020SY23 4AG: before 2020SY23 4AH: before 2020SY23 4AJ: before 2020SY23 4AN: before 2020SY23 4AP: before 2020SY23 4AR: before 2020SY23 4AS: before 2020SY23 4AT: before 2020SY23 4AU: before 2020SY23 4AW: before 2020SY23 4AX: before 2020SY23 4AY: before 2020SY23 4AZ: before 2020SY23 4BA: before 2020SY23 4BB: before 2020SY23 4BD: before 2020SY23 4BE: before 2020SY23 4BG: before 2020SY23 4BH: before 2020SY23 4BJ: before 2020SY23 4BL: before 2020SY23 4BN: before 2020SY23 4BP: before 2020SY23 4BQ: before 2020SY23 4BS: before 2020SY23 4BU: before 2020SY23 4BY: before 2020SY23 4BZ: before 2020SY23 4DA: before 2020SY23 4DB: before 2020SY23 4DD: before 2020SY23 4DE: before 2020SY23 4DF: before 2020SY23 4DG: before 2020SY23 4DH: before 2020SY23 4DJ: before 2020SY23 4DL: before 2020SY23 4DN: before 2020SY23 4DP: before 2020SY23 4DW: before 2020SY23 4DX: before 2020SY23 4DY: before 2020SY23 4DZ: before 2020SY23 4EA: before 2020SY23 4EB: before 2020SY23 4ED: before 2020SY23 4EE: before 2020SY23 4EG: before 2020SY23 4EH: before 2020SY23 4EJ: before 2020SY23 4EL: before 2020SY23 4EQ: before 2020SY23 4ER: before 2020SY23 4ES: before 2020SY23 4ET: before 2020SY23 4EU: before 2020SY23 4EX: before 2020SY23 4EY: before 2020SY23 4EZ: before 2020SY23 4HA: before 2020SY23 4HB: before 2020SY23 4HD: before 2020SY23 4HE: before 2020SY23 4HF: before 2020SY23 4HG: before 2020SY23 4HH: before 2020SY23 4HJ: before 2020SY23 4HL: before 2020SY23 4HQ: before 2020SY23 4HS: before 2020SY23 4HU: before 2020SY23 4HX: before 2020SY23 4HY: before 2020SY23 4HZ: before 2020SY23 4JA: before 2020SY23 4JB: before 2020SY23 4JD: before 2020SY23 4JE: before 2020SY23 4JF: before 2020SY23 4JG: before 2020SY23 4JH: before 2020SY23 4JJ: before 2020SY23 4JL: before 2020SY23 4JN: before 2020SY23 4JQ: before 2020SY23 4JT: before 2020SY23 4JU: before 2020SY23 4JW: before 2020SY23 4JX: before 2020SY23 4JY: before 2020SY23 4JZ: before 2020SY23 4LA: before 2020SY23 4LB: before 2020SY23 4LD: before 2020SY23 4LE: before 2020SY23 4LF: before 2020SY23 4LG: before 2020SY23 4LH: before 2020SY23 4LJ: before 2020SY23 4LL: before 2020SY23 4LN: before 2020SY23 4LP: before 2020SY23 4LR: before 2020SY23 4LT: before 2020SY23 4LU: before 2020SY23 4LX: before 2020SY23 4LY: before 2020SY23 4LZ: before 2020SY23 4NA: before 2020SY23 4NB: before 2020SY23 4ND: before 2020SY23 4NE: before 2020SY23 4NF: before 2020SY23 4NG: before 2020SY23 4NJ: before 2020SY23 4NL: before 2020SY23 4NN: before 2020SY23 4NP: before 2020SY23 4NR: before 2020SY23 4NS: before 2020SY23 4NW: before 2020SY23 4NY: before 2020SY23 4NZ: before 2020SY23 4PA: before 2020SY23 4PF: before 2020SY23 4PH: before 2020SY23 4PJ: before 2020SY23 4PL: before 2020SY23 4PN: before 2020SY23 4PP: before 2020SY23 4PQ: before 2020SY23 4PR: before 2020SY23 4PU: before 2020SY23 4PW: before 2020SY23 4PX: before 2020SY23 4PY: before 2020SY23 4PZ: before 2020SY23 4QA: before 2020SY23 4QB: before 2020SY23 4QE: before 2020SY23 4QF: before 2020SY23 4QG: before 2020SY23 4QH: before 2020SY23 4QJ: before 2020SY23 4QL: before 2020SY23 4QN: before 2020SY23 4QQ: before 2020SY23 4QT: before 2020SY23 4QU: before 2020SY23 4QW: before 2020SY23 4QX: before 2020SY23 4QY: before 2020SY23 4QZ: before 2020SY23 4RA: before 2020SY23 4RB: before 2020SY23 4RD: before 2020SY23 4RE: before 2020SY23 4RF: before 2020SY23 4RG: before 2020SY23 4RH: before 2020SY23 4RJ: before 2020SY23 4RL: before 2020SY23 4RP: before 2020SY23 4RQ: before 2020SY23 4RR: before 2020SY23 4RS: before 2020SY23 4RW: before 2020SY23 4SA: before 2020SY23 4SB: before 2020SY23 4SD: before 2020SY23 4SE: before 2020SY23 4SF: before 2020SY23 4SG: before 2020SY23 4SH: before 2020SY23 4SL: before 2020SY23 4SN: before 2020SY23 4SP: before 2020SY23 4SQ: before 2020SY23 4SR: before 2020SY23 4SS: before 2020SY23 4ST: before 2020SY23 4SW: before 2020SY23 4TA: before 2020SY23 4TD: before 2020SY23 4TE: before 2020SY23 4TF: before 2020SY23 4TG: before 2020SY23 4TH: before 2020SY23 4TJ: before 2020SY23 4TL: before 2020SY23 4TN: before 2020SY23 4TP: before 2020SY23 4TR: before 2020SY23 4TS: before 2020SY23 4TT: before 2020SY23 4TW: before 2020SY23 4UA: before 2020SY23 4UB: before 2020SY23 4UH: before 2020SY23 4UJ: before 2020SY23 4UN: before 2020SY23 4RT: new since 2020SY23 4BW: new since 2020 YstwythLlanfarian Map of every postcode in the SY23 4 sector, by new since 2020 Of the 237 postcodes in the SY23 4 sector that ONS places, 2 are new since 2020 and 235 were in use before 2020. One postcode lies beyond the edge and is listed under the map. Places named: Ystwyth, Llanfarian. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. YstwythLlanfarian
  • New since 2020: 2
  • In use before 2020: 235

Of the 237 postcodes in the SY23 4 sector that ONS places, 2 are new since 2020 and 235 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; when each came into use: the same directory; 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 2 newest postcodes

SY23 4RTJuly 2023SY23 4BWJanuary 2023

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.

SY23 4AQ

What do homes sell for in SY23 4?

Homes in SY23 4 sold for a typical £248,000 in the 12 months to August 2026, across 47 sales, down 5.3% on the 12 months before, HM Land Registry's figures show.

£248,000 typical price, the 12 months to August 2026
£262,000 12 months to August 2025
▼ down 5.3% on the 12 months before
  • Detached £360,000 30 sales
  • Semi-detached £183,750 12 sales
  • Terraced £155,000 5 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 SY23 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 SY23 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.

SY23 4ABSY23 4ADSY23 4AESY23 4AFSY23 4AGSY23 4AHSY23 4AJSY23 4ANSY23 4APSY23 4AQSY23 4ARSY23 4ASSY23 4ATSY23 4AUSY23 4AWSY23 4AXSY23 4AYSY23 4AZSY23 4BASY23 4BBSY23 4BDSY23 4BESY23 4BFSY23 4BGSY23 4BHSY23 4BJSY23 4BLSY23 4BNSY23 4BPSY23 4BQSY23 4BSSY23 4BTSY23 4BUSY23 4BWSY23 4BXSY23 4BYSY23 4BZSY23 4DASY23 4DBSY23 4DDSY23 4DESY23 4DFSY23 4DGSY23 4DHSY23 4DJSY23 4DLSY23 4DNSY23 4DPSY23 4DQSY23 4DRSY23 4DWSY23 4DXSY23 4DYSY23 4DZSY23 4EASY23 4EBSY23 4EDSY23 4EESY23 4EFSY23 4EGSY23 4EHSY23 4EJSY23 4ELSY23 4EQSY23 4ERSY23 4ESSY23 4ETSY23 4EUSY23 4EWSY23 4EXSY23 4EYSY23 4EZSY23 4HASY23 4HBSY23 4HDSY23 4HESY23 4HFSY23 4HGSY23 4HHSY23 4HJSY23 4HLSY23 4HQSY23 4HSSY23 4HUSY23 4HXSY23 4HYSY23 4HZSY23 4JASY23 4JBSY23 4JDSY23 4JESY23 4JFSY23 4JGSY23 4JHSY23 4JJSY23 4JLSY23 4JNSY23 4JQSY23 4JTSY23 4JUSY23 4JWSY23 4JXSY23 4JYSY23 4JZSY23 4LASY23 4LBSY23 4LDSY23 4LESY23 4LFSY23 4LGSY23 4LHSY23 4LJSY23 4LLSY23 4LNSY23 4LPSY23 4LQSY23 4LRSY23 4LTSY23 4LUSY23 4LXSY23 4LYSY23 4LZSY23 4NASY23 4NBSY23 4NDSY23 4NESY23 4NFSY23 4NGSY23 4NJSY23 4NLSY23 4NNSY23 4NPSY23 4NRSY23 4NSSY23 4NTSY23 4NUSY23 4NWSY23 4NXSY23 4NYSY23 4NZSY23 4PASY23 4PBSY23 4PDSY23 4PESY23 4PFSY23 4PGSY23 4PHSY23 4PJSY23 4PLSY23 4PNSY23 4PPSY23 4PQSY23 4PRSY23 4PSSY23 4PTSY23 4PUSY23 4PWSY23 4PXSY23 4PYSY23 4PZSY23 4QASY23 4QBSY23 4QDSY23 4QESY23 4QFSY23 4QGSY23 4QHSY23 4QJSY23 4QLSY23 4QNSY23 4QPSY23 4QQSY23 4QRSY23 4QSSY23 4QTSY23 4QUSY23 4QWSY23 4QXSY23 4QYSY23 4QZSY23 4RASY23 4RBSY23 4RDSY23 4RESY23 4RFSY23 4RGSY23 4RHSY23 4RJSY23 4RLSY23 4RNSY23 4RPSY23 4RQSY23 4RRSY23 4RSSY23 4RTSY23 4RWSY23 4SASY23 4SBSY23 4SDSY23 4SESY23 4SFSY23 4SGSY23 4SHSY23 4SLSY23 4SNSY23 4SPSY23 4SQSY23 4SRSY23 4SSSY23 4STSY23 4SWSY23 4TASY23 4TBSY23 4TDSY23 4TESY23 4TFSY23 4TGSY23 4THSY23 4TJSY23 4TLSY23 4TNSY23 4TPSY23 4TQSY23 4TRSY23 4TSSY23 4TTSY23 4TWSY23 4UASY23 4UBSY23 4UDSY23 4UESY23 4UFSY23 4UGSY23 4UHSY23 4UJSY23 4ULSY23 4UN

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.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.