KA20 3 postcode sector in the KA20 district

KA20 3 is a sector of the KA20 district: every postcode that starts KA20 3. It has 157 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 KA20 3 sector, and which are new since 2020

Map of every postcode in the KA20 3 sector, by new since 2020 Of the 157 postcodes in the KA20 3 sector that ONS places, 6 are new since 2020 and 151 were in use before 2020. 2 postcodes lie beyond the edge and are listed under the map. Places named: Stevenston. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A78A738 KA20 3AB: before 2020KA20 3AE: before 2020KA20 3AF: before 2020KA20 3AG: before 2020KA20 3AJ: before 2020KA20 3AL: before 2020KA20 3AN: before 2020KA20 3AP: before 2020KA20 3AQ: before 2020KA20 3AR: before 2020KA20 3AS: before 2020KA20 3AT: before 2020KA20 3AU: before 2020KA20 3AW: before 2020KA20 3AX: before 2020KA20 3AY: before 2020KA20 3AZ: before 2020KA20 3BA: before 2020KA20 3BB: before 2020KA20 3BD: before 2020KA20 3BE: before 2020KA20 3BF: before 2020KA20 3BG: before 2020KA20 3BH: before 2020KA20 3BJ: before 2020KA20 3BL: before 2020KA20 3BN: before 2020KA20 3BP: before 2020KA20 3BQ: before 2020KA20 3BS: before 2020KA20 3BT: before 2020KA20 3BU: before 2020KA20 3BW: before 2020KA20 3BX: before 2020KA20 3BY: before 2020KA20 3BZ: before 2020KA20 3DA: before 2020KA20 3DB: before 2020KA20 3DD: before 2020KA20 3DE: before 2020KA20 3DF: before 2020KA20 3DG: before 2020KA20 3DH: before 2020KA20 3DL: before 2020KA20 3DN: before 2020KA20 3DP: before 2020KA20 3DQ: before 2020KA20 3DR: before 2020KA20 3DS: before 2020KA20 3DT: before 2020KA20 3DU: before 2020KA20 3DX: before 2020KA20 3DY: before 2020KA20 3DZ: before 2020KA20 3EA: before 2020KA20 3EB: before 2020KA20 3ED: before 2020KA20 3EE: before 2020KA20 3EG: before 2020KA20 3EH: before 2020KA20 3EJ: before 2020KA20 3EL: before 2020KA20 3EN: before 2020KA20 3ER: before 2020KA20 3ES: before 2020KA20 3ET: before 2020KA20 3EU: before 2020KA20 3EX: before 2020KA20 3HA: before 2020KA20 3HB: before 2020KA20 3HD: before 2020KA20 3HE: before 2020KA20 3HF: before 2020KA20 3HG: before 2020KA20 3HH: before 2020KA20 3HJ: before 2020KA20 3HL: before 2020KA20 3HP: before 2020KA20 3HQ: before 2020KA20 3HS: before 2020KA20 3HT: before 2020KA20 3HU: before 2020KA20 3HW: before 2020KA20 3HX: before 2020KA20 3HY: before 2020KA20 3HZ: before 2020KA20 3JA: before 2020KA20 3JB: before 2020KA20 3JD: before 2020KA20 3JE: before 2020KA20 3JF: before 2020KA20 3JG: before 2020KA20 3JH: before 2020KA20 3JJ: before 2020KA20 3JL: before 2020KA20 3JN: before 2020KA20 3JP: before 2020KA20 3JQ: before 2020KA20 3JR: before 2020KA20 3JS: before 2020KA20 3JT: before 2020KA20 3JU: before 2020KA20 3JW: before 2020KA20 3JY: before 2020KA20 3JZ: before 2020KA20 3LA: before 2020KA20 3LB: before 2020KA20 3LD: before 2020KA20 3LE: before 2020KA20 3LF: before 2020KA20 3LG: before 2020KA20 3LH: before 2020KA20 3LJ: before 2020KA20 3LL: before 2020KA20 3LP: before 2020KA20 3LQ: before 2020KA20 3LR: before 2020KA20 3LU: before 2020KA20 3LW: before 2020KA20 3LY: before 2020KA20 3LZ: before 2020KA20 3NA: before 2020KA20 3NB: before 2020KA20 3NJ: before 2020KA20 3NL: before 2020KA20 3NN: before 2020KA20 3NP: before 2020KA20 3NR: before 2020KA20 3NS: before 2020KA20 3NT: before 2020KA20 3NU: before 2020KA20 3NW: before 2020KA20 3NX: before 2020KA20 3NY: before 2020KA20 3PA: before 2020KA20 3PB: before 2020KA20 3PD: before 2020KA20 3PE: before 2020KA20 3PF: before 2020KA20 3PG: before 2020KA20 3PH: before 2020KA20 3PJ: before 2020KA20 3PL: before 2020KA20 3PN: before 2020KA20 3PP: before 2020KA20 3PQ: before 2020KA20 3PR: before 2020KA20 3PU: before 2020KA20 3PW: before 2020KA20 3WG: before 2020KA20 3FA: new since 2020KA20 3FB: new since 2020KA20 3FD: new since 2020KA20 3FE: new since 2020KA20 3JX: new since 2020 Stevenston Map of every postcode in the KA20 3 sector, by new since 2020 Of the 157 postcodes in the KA20 3 sector that ONS places, 6 are new since 2020 and 151 were in use before 2020. 2 postcodes lie beyond the edge and are listed under the map. Places named: Stevenston. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A78 Stevenston
  • New since 2020: 6
  • In use before 2020: 151

Of the 157 postcodes in the KA20 3 sector that ONS places, 6 are new since 2020 and 151 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.

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 5 newest postcodes

KA20 3FESeptember 2024KA20 3FDMay 2023KA20 3FBNovember 2022KA20 3WUMarch 2022KA20 3FASeptember 2021

2 further out, not drawn

These postcodes lie well apart from the rest, so the map is drawn without them to show the rest closer; they are in every count.

KA20 3LNKA20 3WU

Postcodes in KA20 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.

KA20 3ABKA20 3AEKA20 3AFKA20 3AGKA20 3AJKA20 3ALKA20 3ANKA20 3APKA20 3AQKA20 3ARKA20 3ASKA20 3ATKA20 3AUKA20 3AWKA20 3AXKA20 3AYKA20 3AZKA20 3BAKA20 3BBKA20 3BDKA20 3BEKA20 3BFKA20 3BGKA20 3BHKA20 3BJKA20 3BLKA20 3BNKA20 3BPKA20 3BQKA20 3BSKA20 3BTKA20 3BUKA20 3BWKA20 3BXKA20 3BYKA20 3BZKA20 3DAKA20 3DBKA20 3DDKA20 3DEKA20 3DFKA20 3DGKA20 3DHKA20 3DLKA20 3DNKA20 3DPKA20 3DQKA20 3DRKA20 3DSKA20 3DTKA20 3DUKA20 3DXKA20 3DYKA20 3DZKA20 3EAKA20 3EBKA20 3EDKA20 3EEKA20 3EGKA20 3EHKA20 3EJKA20 3ELKA20 3ENKA20 3ERKA20 3ESKA20 3ETKA20 3EUKA20 3EXKA20 3FAKA20 3FBKA20 3FDKA20 3FEKA20 3HAKA20 3HBKA20 3HDKA20 3HEKA20 3HFKA20 3HGKA20 3HHKA20 3HJKA20 3HLKA20 3HPKA20 3HQKA20 3HSKA20 3HTKA20 3HUKA20 3HWKA20 3HXKA20 3HYKA20 3HZKA20 3JAKA20 3JBKA20 3JDKA20 3JEKA20 3JFKA20 3JGKA20 3JHKA20 3JJKA20 3JLKA20 3JNKA20 3JPKA20 3JQKA20 3JRKA20 3JSKA20 3JTKA20 3JUKA20 3JWKA20 3JXKA20 3JYKA20 3JZKA20 3LAKA20 3LBKA20 3LDKA20 3LEKA20 3LFKA20 3LGKA20 3LHKA20 3LJKA20 3LLKA20 3LNKA20 3LPKA20 3LQKA20 3LRKA20 3LUKA20 3LWKA20 3LYKA20 3LZKA20 3NAKA20 3NBKA20 3NJKA20 3NLKA20 3NNKA20 3NPKA20 3NRKA20 3NSKA20 3NTKA20 3NUKA20 3NWKA20 3NXKA20 3NYKA20 3PAKA20 3PBKA20 3PDKA20 3PEKA20 3PFKA20 3PGKA20 3PHKA20 3PJKA20 3PLKA20 3PNKA20 3PPKA20 3PQKA20 3PRKA20 3PUKA20 3PWKA20 3WGKA20 3WU

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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