KA1 4 postcode sector in the KA1 district

KA1 4 is a sector of the KA1 district: every postcode that starts KA1 4. It has 191 postcodes in use, 5 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 KA1 4 sector, and which are new since 2020

Map of every postcode in the KA1 4 sector, by new since 2020 Of the 191 postcodes in the KA1 4 sector that ONS places, 4 are new since 2020 and 187 were in use before 2020. Places named: Kilmarnock South, Kilmarnock West and Crosshouse. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A77A71A735A759 KA1 4AD: before 2020KA1 4AE: before 2020KA1 4AG: before 2020KA1 4AH: before 2020KA1 4AJ: before 2020KA1 4AN: before 2020KA1 4AQ: before 2020KA1 4AS: before 2020KA1 4AT: before 2020KA1 4AW: before 2020KA1 4AX: before 2020KA1 4AY: before 2020KA1 4AZ: before 2020KA1 4BB: before 2020KA1 4BD: before 2020KA1 4BS: before 2020KA1 4BT: before 2020KA1 4BU: before 2020KA1 4BY: before 2020KA1 4DA: before 2020KA1 4DD: before 2020KA1 4DG: before 2020KA1 4DH: before 2020KA1 4DN: before 2020KA1 4DP: before 2020KA1 4DQ: before 2020KA1 4DS: before 2020KA1 4DX: before 2020KA1 4DY: before 2020KA1 4DZ: before 2020KA1 4EA: before 2020KA1 4EB: before 2020KA1 4ED: before 2020KA1 4EE: before 2020KA1 4EF: before 2020KA1 4EG: before 2020KA1 4EH: before 2020KA1 4EJ: before 2020KA1 4EL: before 2020KA1 4EN: before 2020KA1 4EP: before 2020KA1 4EQ: before 2020KA1 4EU: before 2020KA1 4EX: before 2020KA1 4HE: before 2020KA1 4HH: before 2020KA1 4HL: before 2020KA1 4HS: before 2020KA1 4HW: before 2020KA1 4HY: before 2020KA1 4JB: before 2020KA1 4JD: before 2020KA1 4JE: before 2020KA1 4JG: before 2020KA1 4JH: before 2020KA1 4JQ: before 2020KA1 4JY: before 2020KA1 4JZ: before 2020KA1 4LA: before 2020KA1 4LB: before 2020KA1 4LD: before 2020KA1 4LF: before 2020KA1 4LG: before 2020KA1 4LH: before 2020KA1 4LJ: before 2020KA1 4LN: before 2020KA1 4LP: before 2020KA1 4LQ: before 2020KA1 4LR: before 2020KA1 4LS: before 2020KA1 4LT: before 2020KA1 4LU: before 2020KA1 4LX: before 2020KA1 4LY: before 2020KA1 4LZ: before 2020KA1 4NA: before 2020KA1 4NB: before 2020KA1 4ND: before 2020KA1 4NE: before 2020KA1 4NF: before 2020KA1 4NG: before 2020KA1 4NH: before 2020KA1 4NJ: before 2020KA1 4NL: before 2020KA1 4NN: before 2020KA1 4NQ: before 2020KA1 4NW: before 2020KA1 4NX: before 2020KA1 4NY: before 2020KA1 4PA: before 2020KA1 4PB: before 2020KA1 4PD: before 2020KA1 4PE: before 2020KA1 4PF: before 2020KA1 4PG: before 2020KA1 4PH: before 2020KA1 4PJ: before 2020KA1 4PL: before 2020KA1 4PN: before 2020KA1 4PP: before 2020KA1 4PQ: before 2020KA1 4PR: before 2020KA1 4PS: before 2020KA1 4PT: before 2020KA1 4PU: before 2020KA1 4PW: before 2020KA1 4PX: before 2020KA1 4PY: before 2020KA1 4PZ: before 2020KA1 4QA: before 2020KA1 4QB: before 2020KA1 4QD: before 2020KA1 4QE: before 2020KA1 4QH: before 2020KA1 4QJ: before 2020KA1 4QL: before 2020KA1 4QN: before 2020KA1 4QP: before 2020KA1 4QR: before 2020KA1 4QS: before 2020KA1 4QT: before 2020KA1 4QU: before 2020KA1 4QW: before 2020KA1 4QX: before 2020KA1 4QY: before 2020KA1 4QZ: before 2020KA1 4RA: before 2020KA1 4RB: before 2020KA1 4RD: before 2020KA1 4RE: before 2020KA1 4RF: before 2020KA1 4RG: before 2020KA1 4RH: before 2020KA1 4RJ: before 2020KA1 4RQ: before 2020KA1 4RS: before 2020KA1 4RT: before 2020KA1 4RU: before 2020KA1 4RX: before 2020KA1 4RY: before 2020KA1 4RZ: before 2020KA1 4SA: before 2020KA1 4SB: before 2020KA1 4SD: before 2020KA1 4SE: before 2020KA1 4SF: before 2020KA1 4SG: before 2020KA1 4SH: before 2020KA1 4SJ: before 2020KA1 4SL: before 2020KA1 4SN: before 2020KA1 4SP: before 2020KA1 4SQ: before 2020KA1 4SS: before 2020KA1 4ST: before 2020KA1 4SU: before 2020KA1 4SW: before 2020KA1 4SX: before 2020KA1 4SY: before 2020KA1 4SZ: before 2020KA1 4TA: before 2020KA1 4TB: before 2020KA1 4TD: before 2020KA1 4TE: before 2020KA1 4TF: before 2020KA1 4TG: before 2020KA1 4TH: before 2020KA1 4UA: before 2020KA1 4UB: before 2020KA1 4UD: before 2020KA1 4UE: before 2020KA1 4UF: before 2020KA1 4UG: before 2020KA1 4UH: before 2020KA1 4UJ: before 2020KA1 4UL: before 2020KA1 4UN: before 2020KA1 4UP: before 2020KA1 4UQ: before 2020KA1 4UR: before 2020KA1 4UT: before 2020KA1 4UU: before 2020KA1 4UW: before 2020KA1 4UX: before 2020KA1 4UY: before 2020KA1 4UZ: before 2020KA1 4BL: new since 2020KA1 4DT: new since 2020KA1 4NT: new since 2020KA1 4NU: new since 2020 Kilmarnock SouthKilmarnock West and Crosshouse Map of every postcode in the KA1 4 sector, by new since 2020 Of the 191 postcodes in the KA1 4 sector that ONS places, 4 are new since 2020 and 187 were in use before 2020. Places named: Kilmarnock South, Kilmarnock West and Crosshouse. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A77 Kilmarnock SouthKilmarnock West and Crosshouse
  • New since 2020: 4
  • In use before 2020: 187

Of the 191 postcodes in the KA1 4 sector that ONS places, 4 are new since 2020 and 187 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 4 newest postcodes

KA1 4DTMarch 2026KA1 4BLOctober 2024KA1 4NTMarch 2021KA1 4NUMarch 2021

Postcodes in KA1 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.

KA1 4ADKA1 4AEKA1 4AGKA1 4AHKA1 4AJKA1 4ANKA1 4AQKA1 4ASKA1 4ATKA1 4AWKA1 4AXKA1 4AYKA1 4AZKA1 4BBKA1 4BDKA1 4BLKA1 4BSKA1 4BTKA1 4BUKA1 4BYKA1 4DAKA1 4DDKA1 4DGKA1 4DHKA1 4DNKA1 4DPKA1 4DQKA1 4DSKA1 4DTKA1 4DXKA1 4DYKA1 4DZKA1 4EAKA1 4EBKA1 4EDKA1 4EEKA1 4EFKA1 4EGKA1 4EHKA1 4EJKA1 4ELKA1 4ENKA1 4EPKA1 4EQKA1 4EUKA1 4EXKA1 4HEKA1 4HHKA1 4HLKA1 4HSKA1 4HWKA1 4HYKA1 4JBKA1 4JDKA1 4JEKA1 4JGKA1 4JHKA1 4JQKA1 4JYKA1 4JZKA1 4LAKA1 4LBKA1 4LDKA1 4LFKA1 4LGKA1 4LHKA1 4LJKA1 4LNKA1 4LPKA1 4LQKA1 4LRKA1 4LSKA1 4LTKA1 4LUKA1 4LXKA1 4LYKA1 4LZKA1 4NAKA1 4NBKA1 4NDKA1 4NEKA1 4NFKA1 4NGKA1 4NHKA1 4NJKA1 4NLKA1 4NNKA1 4NQKA1 4NTKA1 4NUKA1 4NWKA1 4NXKA1 4NYKA1 4PAKA1 4PBKA1 4PDKA1 4PEKA1 4PFKA1 4PGKA1 4PHKA1 4PJKA1 4PLKA1 4PNKA1 4PPKA1 4PQKA1 4PRKA1 4PSKA1 4PTKA1 4PUKA1 4PWKA1 4PXKA1 4PYKA1 4PZKA1 4QAKA1 4QBKA1 4QDKA1 4QEKA1 4QHKA1 4QJKA1 4QLKA1 4QNKA1 4QPKA1 4QRKA1 4QSKA1 4QTKA1 4QUKA1 4QWKA1 4QXKA1 4QYKA1 4QZKA1 4RAKA1 4RBKA1 4RDKA1 4REKA1 4RFKA1 4RGKA1 4RHKA1 4RJKA1 4RQKA1 4RSKA1 4RTKA1 4RUKA1 4RXKA1 4RYKA1 4RZKA1 4SAKA1 4SBKA1 4SDKA1 4SEKA1 4SFKA1 4SGKA1 4SHKA1 4SJKA1 4SLKA1 4SNKA1 4SPKA1 4SQKA1 4SRKA1 4SSKA1 4STKA1 4SUKA1 4SWKA1 4SXKA1 4SYKA1 4SZKA1 4TAKA1 4TBKA1 4TDKA1 4TEKA1 4TFKA1 4TGKA1 4THKA1 4UAKA1 4UBKA1 4UDKA1 4UEKA1 4UFKA1 4UGKA1 4UHKA1 4UJKA1 4ULKA1 4UNKA1 4UPKA1 4UQKA1 4URKA1 4UTKA1 4UUKA1 4UWKA1 4UXKA1 4UYKA1 4UZ

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.