# CM23 1GX: area report for a postcode in East Hertfordshire

CM23 1GX is a postcode in East Hertfordshire.

A postcode has no figures of its own: each layer is published for whole councils, neighbourhoods or exact points. The figures below are for the whole of East Hertfordshire. Open the map at CM23 1GX for neighbourhoods and points.

In: [East Hertfordshire](https://openindex.co.uk/east-hertfordshire) › [CM23](https://openindex.co.uk/postcode/cm23) › [CM23 1](https://openindex.co.uk/postcode/cm23-1)

## Around this postcode

- **14 crimes within 500 m**: August, down 18% on July. East Hertfordshire 004D: 125 a year per 1,000 people. (Map point) https://openindex.co.uk/map/street-crime?around=0.1694,51.8887,CM231GX
- **Bishops Stortford, 2.5 km**: About 31 minutes on foot. (Exact point) https://openindex.co.uk/map/stations?around=0.1694,51.8887,CM231GX
- **1 school within 800 m**: Nearest is 510 m away. (Exact point) https://openindex.co.uk/map/schools?around=0.1694,51.8887,CM231GX
- **No property in CM23 1GX listed at risk of flooding**: From rivers or the sea, with flood defences, in the Environment Agency's assessment. (Postcode) https://openindex.co.uk/map/flood-risk-by-postcode?around=0.1694,51.8887,CM231GX
- **England’s least deprived 40%**: This neighbourhood, East Hertfordshire 004D. (Neighbourhood) https://openindex.co.uk/map/deprivation-england?around=0.1694,51.8887,CM231GX
- **£457,417 average price**: For the whole of East Hertfordshire, July 2026. (Council) https://openindex.co.uk/map/house-prices?around=0.1694,51.8887,CM231GX
- **No GP practices within 1 km**: None found within 2 km. (Postcode) https://openindex.co.uk/map/gp-practices?around=0.1694,51.8887,CM231GX
- **1 supermarket within 1 km**: Nearest is 640 m away. (Exact point) https://openindex.co.uk/map/supermarkets?around=0.1694,51.8887,CM231GX
- **94% can get gigabit broadband**: Of homes and businesses in this output area, January 2026. (Output area) https://openindex.co.uk/map/gigabit-broadband?around=0.1694,51.8887,CM231GX
- **Moderate road and rail noise at CM23 1GX**: Road 63 dB, rail under 40 dB or not modelled (Lden, modelled for 2021) (Postcode) https://openindex.co.uk/map/noise-by-postcode?around=0.1694,51.8887,CM231GX
- **In a radon Affected Area, class 2 of 6**: 1% to 3% of homes in this 1 km square are estimated to be at or above the radon Action Level. (1 km grid) https://openindex.co.uk/map/radon?around=0.1694,51.8887,CM231GX
- **11.8 µg/m³ nitrogen dioxide**: Modelled yearly average for this 1 km square, 2025. (1 km grid) https://openindex.co.uk/map/nitrogen-dioxide?around=0.1694,51.8887,CM231GX

## Nearest schools

| School | Phase | Distance | Ofsted | Results |
| --- | --- | --- | --- | --- |
| [Avanti Meadows Primary School](https://openindex.co.uk/school/avanti-meadows-primary-school-e147834) | Primary | 510 m (6 minutes on foot) | Good (overall), March 2024 | 47% met the expected standard at KS2 (2024/25) |
| [Avanti Grange Secondary School](https://openindex.co.uk/school/avanti-grange-secondary-school-e149078) | Secondary | 1.3 km (17 minutes on foot) | Graded inspection, May 2025: no overall grade | – |
| [Birchanger Church of England Voluntary Controlled Primary School](https://openindex.co.uk/school/birchanger-church-of-england-voluntary-controlled-primary-school-e115127) | Primary | 1.5 km (19 minutes on foot) | Report card, April 2026: safeguarding met | 64% met the expected standard at KS2 (2024/25) |
| [All Saints Church of England Primary School and Nursery, Bishop's Stortford](https://openindex.co.uk/school/all-saints-church-of-england-primary-school-and-nursery-bishops-stortford-e117472) | Primary | 1.6 km (20 minutes on foot) | School remains Good, March 2023 | 61% met the expected standard at KS2 (2024/25) |
| [Birchwood High School](https://openindex.co.uk/school/birchwood-high-school-e137637) | Secondary | 1.8 km (23 minutes on foot) | Graded inspection, January 2025: no overall grade | Attainment 8 of 45.5 (2025/26, provisional) |
| [Summercroft Primary School](https://openindex.co.uk/school/summercroft-primary-school-e137351) | Primary | 1.9 km (24 minutes on foot) | School remains Good, December 2022 | 73% met the expected standard at KS2 (2024/25) |
| [Northgate Primary School](https://openindex.co.uk/school/northgate-primary-school-e138539) | Primary | 2 km (25 minutes on foot) | Good (overall), November 2023 | 82% met the expected standard at KS2 (2024/25) |
| [Hockerill Anglo-European College](https://openindex.co.uk/school/hockerill-anglo-european-college-e136482) | Secondary | 2 km (25 minutes on foot) | Good (overall), June 2022 | Attainment 8 of 62.3 (2025/26, provisional) |

## Recent sales nearby

| Month | Price | Home | Distance |
| --- | --- | --- | --- |
| October 2023 | £248,000 | Flat or maisonette, established, leasehold | 90 m |
| April 2025 | £410,000 | Terraced, established, freehold | 120 m |
| August 2024 | £295,000 | Flat or maisonette, established, leasehold | 120 m |
| March 2025 | £435,000 | Terraced, established, freehold | 130 m |
| October 2025 | £545,000 | Detached, new build, freehold | 150 m |
| May 2026 | £630,000 | Detached, established, freehold | 160 m |
| October 2024 | £325,000 | Flat or maisonette, established, freehold | 160 m |
| December 2025 | £745,000 | Detached, new build, freehold | 170 m |

## Within 1 km

- Supermarkets: Lidl Bishops Stortford (640 m, Lidl)

## Key figures

- **Average house price: £457,417** (July 2026). East Hertfordshire’s average house price was £457,417 in July 2026 (HM Land Registry). Up 3.7% in a year. Source: UK House Price Index, July 2026. Published 16 September 2026.
- **Median full-time pay: £52,184** (2025). Full-time workers living in East Hertfordshire earned a median of £52,184 in 2025 (ONS earnings survey). 8th highest paid of 348. Source: Annual Survey of Hours and Earnings, 2025. Published 23 October 2025.
- **House price to pay: 8.8×** (2025). A home in East Hertfordshire costs 8.8 times local full-time pay. Joint 96th least affordable of 348. Source: Worked out by Open Index from the UK House Price Index and the ONS earnings survey. Published 16 September 2026.
- **Deprivation score: 9.8** (2025). East Hertfordshire has a deprivation score of 9.8 in the English Indices of Deprivation 2025 (MHCLG). Joint 19th least deprived of 296. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025.

## East Hertfordshire 004D (Neighbourhood)

- **Deprivation score: 12.4** (2025). East Hertfordshire 004D has a deprivation score of 12.4 in the English Indices of Deprivation 2025 (MHCLG). Joint 11,576th least deprived of 33,755. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025.
- **Median sale price: £553,000** (2025). The median price paid for a home in East Hertfordshire 004D was £553,000 in 2025. Joint 3,496th most expensive of 31,750. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026.
- **Population: 1,610** (2021). East Hertfordshire 004D had 1,610 usual residents at the census (ONS Census 2021). Joint 17,586th most populated of 46,844. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026.
- **Gigabit broadband coverage: 97.2%** (January 2026). In East Hertfordshire 004D, 97.2% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026.

## CM23 (Postcode district)

- **Median sale price: £437,500** (2025). The median price paid for a home in CM23 was £437,500 in 2025. Joint 471st most expensive of 2,235. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026.
- **Population: 44,136** (2021). CM23 had 44,136 usual residents at the census (ONS Census 2021). 332nd most populated of 2,756. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026.
- **People in radon Affected Area squares: 61%** (2022). About 61% of people in CM23 live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022.
- **Gigabit broadband coverage: 87.7%** (January 2026). In CM23, 87.7% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026.

## About

- Type: Postcode
- Council: [East Hertfordshire](https://openindex.co.uk/east-hertfordshire)
- Centre: 51.8887, 0.1694

Council: [East Hertfordshire](https://openindex.co.uk/east-hertfordshire) (District, 100%).

## Your MP

- [Hertford and Stortford](https://openindex.co.uk/constituency/hertford-and-stortford): Josh Dean (Labour), MP since July 2024.

As of 18 October 2026. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

## Sources

- [Street-level crime](https://openindex.co.uk/sources/street-crime), August 2026 (Map point)
- [Rail and Tube stations](https://openindex.co.uk/sources/stations), 2024/25 (Exact point)
- [Schools](https://openindex.co.uk/sources/schools) (Exact point)
- [Flood risk by postcode](https://openindex.co.uk/sources/flood-risk-by-postcode), June 2026 (Postcode)
- [English Indices of Deprivation 2025](https://openindex.co.uk/sources/deprivation-england), 2025 (Neighbourhood)
- [Average house price](https://openindex.co.uk/sources/house-prices), July 2026 (Council)
- [GP practices](https://openindex.co.uk/sources/gp-practices) (Postcode)
- [Supermarkets](https://openindex.co.uk/sources/supermarkets) (Exact point)
- [Gigabit broadband coverage](https://openindex.co.uk/sources/gigabit-broadband), January 2026 (Output area)
- [Road and rail noise by postcode](https://openindex.co.uk/sources/noise-by-postcode), 2021 (Postcode)
- [Radon potential](https://openindex.co.uk/sources/radon) (1 km grid)
- [Nitrogen dioxide (NO2)](https://openindex.co.uk/sources/nitrogen-dioxide), 2025 (1 km grid)

On the map: https://openindex.co.uk/map/sold-prices?around=0.1694,51.8887,CM231GX

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/cm23-1gx.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.8, https://doi.org/10.5281/zenodo.23508850. The HTML page: https://openindex.co.uk/postcode/cm23-1gx