# CM23 3GW: area report for a postcode in East Hertfordshire

CM23 3GW 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 3GW for neighbourhoods and points.

In: [East Hertfordshire](https://openindex.co.uk/east-hertfordshire) › [CM23](https://openindex.co.uk/postcode/cm23) › [CM23 3](https://openindex.co.uk/postcode/cm23-3)

## Around this postcode

- **11 crimes within 500 m**: August, the same as July. East Hertfordshire 007B: 60 a year per 1,000 people. (Map point) https://openindex.co.uk/map/street-crime?around=0.1676,51.8624,CM233GW
- **Bishops Stortford, 510 m**: About 6 minutes on foot. (Exact point) https://openindex.co.uk/map/stations?around=0.1676,51.8624,CM233GW
- **3 schools within 800 m**: Nearest is 470 m away. (Exact point) https://openindex.co.uk/map/schools?around=0.1676,51.8624,CM233GW
- **No property in CM23 3GW 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=0.1676,51.8624,CM233GW
- **England’s least deprived 10%**: This neighbourhood, East Hertfordshire 007B. (Neighbourhood) https://openindex.co.uk/map/deprivation-england?around=0.1676,51.8624,CM233GW
- **£457,417 average price**: For the whole of East Hertfordshire, July 2026. (Council) https://openindex.co.uk/map/house-prices?around=0.1676,51.8624,CM233GW
- **2 GP practices within 1 km**: Nearest is 570 m away. (Postcode) https://openindex.co.uk/map/gp-practices?around=0.1676,51.8624,CM233GW
- **7 supermarkets within 1 km**: Nearest is 290 m away. (Exact point) https://openindex.co.uk/map/supermarkets?around=0.1676,51.8624,CM233GW
- **No gigabit broadband at CM23 3GW**: Superfast for 100%. What can be ordered, January 2026. (Postcode) https://openindex.co.uk/map/broadband-by-postcode?around=0.1676,51.8624,CM233GW
- **Loud road and rail noise at CM23 3GW**: Road 52 dB, rail 69 dB (Lden, modelled for 2021) (Postcode) https://openindex.co.uk/map/noise-by-postcode?around=0.1676,51.8624,CM233GW
- **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=0.1676,51.8624,CM233GW
- **12.1 µg/m³ nitrogen dioxide**: Modelled yearly average for this 1 km square, 2025. (1 km grid) https://openindex.co.uk/map/nitrogen-dioxide?around=0.1676,51.8624,CM233GW

## Nearest schools

| School | Phase | Distance | Ofsted | Results |
| --- | --- | --- | --- | --- |
| [Thorn Grove Primary School](https://openindex.co.uk/school/thorn-grove-primary-school-e117277) | Primary | 470 m (6 minutes on foot) | Standards maintained, October 2024 | 60% met the expected standard at KS2 (2024/25) |
| [The Hertfordshire & Essex High School and Science College](https://openindex.co.uk/school/the-hertfordshire-and-essex-high-school-and-science-college-e140786) | Secondary | 640 m (8 minutes on foot) | Outstanding (overall), November 2023 | Attainment 8 of 62.0 (2025/26, provisional) |
| [Thorley Hill Primary School](https://openindex.co.uk/school/thorley-hill-primary-school-e117230) | Primary | 800 m (10 minutes on foot) | School remains Good, March 2024 | 87% met the expected standard at KS2 (2024/25) |
| [Hockerill Anglo-European College](https://openindex.co.uk/school/hockerill-anglo-european-college-e136482) | Secondary | 990 m (12 minutes on foot) | Good (overall), June 2022 | Attainment 8 of 62.3 (2025/26, provisional) |
| [White Trees Independent School](https://openindex.co.uk/school/white-trees-independent-school-e140655) | Special | 1 km (13 minutes on foot) | No outcome in Ofsted's file | – |
| [St Michael's Church of England Primary School](https://openindex.co.uk/school/st-michaels-church-of-england-primary-school-e117426) | Primary | 1 km (13 minutes on foot) | Standards maintained, January 2025 | 68% met the expected standard at KS2 (2024/25) |
| [Windhill21](https://openindex.co.uk/school/windhill21-e141851) | Primary | 1.1 km (14 minutes on foot) | Standards maintained, March 2025 | 70% met the expected standard at KS2 (2024/25) |
| [Richard Whittington Primary School](https://openindex.co.uk/school/richard-whittington-primary-school-e151078) | Primary | 1.2 km (15 minutes on foot) | School remains Good, November 2019 | 80% met the expected standard at KS2 (2024/25) |

## Recent sales nearby

| Month | Price | Home | Distance |
| --- | --- | --- | --- |
| July 2025 | £660,000 | Detached, established, freehold | 90 m |
| March 2025 | £370,000 | Flat or maisonette, established, leasehold | 100 m |
| March 2026 | £345,000 | Terraced, established, freehold | 110 m |
| June 2026 | £685,000 | Detached, established, freehold | 120 m |
| May 2026 | £275,000 | Flat or maisonette, established, leasehold | 120 m |
| April 2025 | £257,500 | Flat or maisonette, established, leasehold | 120 m |
| June 2026 | £360,000 | Terraced, established, freehold | 130 m |
| March 2026 | £275,000 | Flat or maisonette, established, leasehold | 150 m |

## Within 1 km

- Stations: Bishops Stortford (510 m, 6 minutes on foot)
- GP practices: HELIX MEDICAL CENTRE (570 m); SOUTH STREET SURGERY (660 m)
- Pharmacies: HOBBS PHARMACY (570 m); TRINITY PHARMACY (670 m)
- Dental practices: SOUTH STREET (DENTAL SURGERY) (670 m); THE DENTIST (820 m); THE ORTHODONTIC PRACTICE (870 m); RIVERSIDE DENTAL PRACTICE (910 m); SMILE AND WELLBEING DENTAL (910 m)
- Supermarkets: Little Waitrose Shell Thorley (290 m, Waitrose); Co-op Bishop's Stortford (530 m, East of England Co-operative); Aldi Hockerill Bishop's Stortford (560 m, Aldi); Tesco Havers Ln Express (810 m, Tesco); Tesco Bishop's Stortford South St Express (870 m, Tesco)

## 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 007B (Neighbourhood)

- **Deprivation score: 4.4** (2025). East Hertfordshire 007B has a deprivation score of 4.4 in the English Indices of Deprivation 2025 (MHCLG). Joint 2,205th least deprived of 33,755. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025.
- **Median sale price: £360,000** (2025). The median price paid for a home in East Hertfordshire 007B was £360,000 in 2025. Joint 10,972nd most expensive of 31,750. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026.
- **Population: 1,904** (2021). East Hertfordshire 007B had 1,904 usual residents at the census (ONS Census 2021). Joint 7,123rd 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: 92.7%** (January 2026). In East Hertfordshire 007B, 92.7% 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.

## 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: 51.8624, 0.1676

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)
- [Broadband by postcode](https://openindex.co.uk/sources/broadband-by-postcode), January 2026 (Postcode)
- [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=0.1676,51.8624,CM233GW

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/cm23-3gw.

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/cm23-3gw