CM23 5 postcode sector in the CM23 district

CM23 5 is a sector of the CM23 district: every postcode that starts CM23 5. It has 203 postcodes in use, 4 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 CM23 5 sector, and which are new since 2020

Map of every postcode in the CM23 5 sector, by new since 2020 Of the 203 postcodes in the CM23 5 sector that ONS places, 6 are new since 2020 and 197 were in use before 2020. Places named: Bishop's Stortford All Saints, Bishop's Stortford Parsonage. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A120M11A1250 CM23 5AA: before 2020CM23 5AB: before 2020CM23 5AD: before 2020CM23 5AE: before 2020CM23 5AF: before 2020CM23 5AG: before 2020CM23 5AH: before 2020CM23 5AJ: before 2020CM23 5AL: before 2020CM23 5AN: before 2020CM23 5AP: before 2020CM23 5AQ: before 2020CM23 5AR: before 2020CM23 5AS: before 2020CM23 5AT: before 2020CM23 5AZ: before 2020CM23 5BA: before 2020CM23 5BB: before 2020CM23 5BD: before 2020CM23 5BE: before 2020CM23 5BG: before 2020CM23 5BH: before 2020CM23 5BJ: before 2020CM23 5BL: before 2020CM23 5BN: before 2020CM23 5BP: before 2020CM23 5BQ: before 2020CM23 5BS: before 2020CM23 5BT: before 2020CM23 5BU: before 2020CM23 5BX: before 2020CM23 5BY: before 2020CM23 5BZ: before 2020CM23 5DA: before 2020CM23 5DD: before 2020CM23 5DE: before 2020CM23 5DF: before 2020CM23 5DG: before 2020CM23 5DH: before 2020CM23 5DJ: before 2020CM23 5DL: before 2020CM23 5DN: before 2020CM23 5DP: before 2020CM23 5DQ: before 2020CM23 5DR: before 2020CM23 5DS: before 2020CM23 5DT: before 2020CM23 5DU: before 2020CM23 5DW: before 2020CM23 5DX: before 2020CM23 5DY: before 2020CM23 5EA: before 2020CM23 5EB: before 2020CM23 5EE: before 2020CM23 5EF: before 2020CM23 5EG: before 2020CM23 5EH: before 2020CM23 5EJ: before 2020CM23 5EL: before 2020CM23 5EN: before 2020CM23 5EP: before 2020CM23 5ER: before 2020CM23 5ES: before 2020CM23 5ET: before 2020CM23 5EU: before 2020CM23 5EX: before 2020CM23 5EY: before 2020CM23 5FA: before 2020CM23 5FD: before 2020CM23 5FE: before 2020CM23 5FF: before 2020CM23 5FG: before 2020CM23 5FH: before 2020CM23 5FL: before 2020CM23 5FP: before 2020CM23 5GB: before 2020CM23 5GN: before 2020CM23 5GP: before 2020CM23 5GW: before 2020CM23 5GY: before 2020CM23 5GZ: before 2020CM23 5HE: before 2020CM23 5HF: before 2020CM23 5HH: before 2020CM23 5HL: before 2020CM23 5HN: before 2020CM23 5HP: before 2020CM23 5HQ: before 2020CM23 5HR: before 2020CM23 5HS: before 2020CM23 5HT: before 2020CM23 5HU: before 2020CM23 5HW: before 2020CM23 5HX: before 2020CM23 5HY: before 2020CM23 5JA: before 2020CM23 5JB: before 2020CM23 5JD: before 2020CM23 5JE: before 2020CM23 5JF: before 2020CM23 5JG: before 2020CM23 5JH: before 2020CM23 5JJ: before 2020CM23 5JL: before 2020CM23 5JN: before 2020CM23 5JP: before 2020CM23 5JQ: before 2020CM23 5JR: before 2020CM23 5JS: before 2020CM23 5JT: before 2020CM23 5JU: before 2020CM23 5JX: before 2020CM23 5JY: before 2020CM23 5JZ: before 2020CM23 5LA: before 2020CM23 5LB: before 2020CM23 5LD: before 2020CM23 5LE: before 2020CM23 5LF: before 2020CM23 5LG: before 2020CM23 5LH: before 2020CM23 5LJ: before 2020CM23 5LL: before 2020CM23 5LN: before 2020CM23 5LP: before 2020CM23 5LQ: before 2020CM23 5LR: before 2020CM23 5LS: before 2020CM23 5LT: before 2020CM23 5LU: before 2020CM23 5LW: before 2020CM23 5LX: before 2020CM23 5LZ: before 2020CM23 5NA: before 2020CM23 5ND: before 2020CM23 5NF: before 2020CM23 5NG: before 2020CM23 5NH: before 2020CM23 5NJ: before 2020CM23 5NL: before 2020CM23 5NN: before 2020CM23 5NP: before 2020CM23 5NQ: before 2020CM23 5NR: before 2020CM23 5NS: before 2020CM23 5NT: before 2020CM23 5NU: before 2020CM23 5NW: before 2020CM23 5NX: before 2020CM23 5NZ: before 2020CM23 5PA: before 2020CM23 5PB: before 2020CM23 5PD: before 2020CM23 5PE: before 2020CM23 5PJ: before 2020CM23 5PN: before 2020CM23 5PP: before 2020CM23 5PR: before 2020CM23 5PS: before 2020CM23 5PT: before 2020CM23 5PU: before 2020CM23 5PW: before 2020CM23 5PX: before 2020CM23 5PY: before 2020CM23 5PZ: before 2020CM23 5QA: before 2020CM23 5QB: before 2020CM23 5QD: before 2020CM23 5QF: before 2020CM23 5QG: before 2020CM23 5QH: before 2020CM23 5QJ: before 2020CM23 5QL: before 2020CM23 5QN: before 2020CM23 5QP: before 2020CM23 5QQ: before 2020CM23 5QR: before 2020CM23 5QS: before 2020CM23 5QT: before 2020CM23 5QU: before 2020CM23 5QX: before 2020CM23 5QY: before 2020CM23 5QZ: before 2020CM23 5RA: before 2020CM23 5RB: before 2020CM23 5RD: before 2020CM23 5RE: before 2020CM23 5RG: before 2020CM23 5RN: before 2020CM23 5SB: before 2020CM23 5SH: before 2020CM23 5SJ: before 2020CM23 5SN: before 2020CM23 5SZ: before 2020CM23 5TB: before 2020CM23 5TT: before 2020CM23 5YF: before 2020CM23 5FQ: new since 2020CM23 5FR: new since 2020CM23 5FS: new since 2020CM23 5FT: new since 2020CM23 5FU: new since 2020CM23 5RS: new since 2020 Bishop's Stortford All SaintsBishop's Stortford Parsonage Map of every postcode in the CM23 5 sector, by new since 2020 Of the 203 postcodes in the CM23 5 sector that ONS places, 6 are new since 2020 and 197 were in use before 2020. Places named: Bishop's Stortford All Saints, Bishop's Stortford Parsonage. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A120M11 Bishop's Stortford All SaintsBishop's Stortford Parsonage
  • New since 2020: 6
  • In use before 2020: 197

Of the 203 postcodes in the CM23 5 sector that ONS places, 6 are new since 2020 and 197 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. 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 5 newest postcodes

CM23 5FRJuly 2023CM23 5FSNovember 2022CM23 5FQOctober 2022CM23 5FTAugust 2022CM23 5FUSeptember 2021

What do homes sell for in CM23 5?

Homes in CM23 5 sold for a typical £450,000 in the 12 months to August 2026, across 91 sales, no change on the 12 months before, HM Land Registry's figures show.

£450,000 typical price, the 12 months to August 2026
£450,000 12 months to August 2025
■ no change on the 12 months before
  • Detached £661,250 20 sales
  • Semi-detached £461,250 34 sales
  • Terraced £405,000 20 sales
  • Flat or maisonette £240,000 17 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 CM23 5. 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 CM23 5

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.

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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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