# SL9 9SZ: area report for a postcode in Buckinghamshire

SL9 9SZ is a postcode in Buckinghamshire.

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 Buckinghamshire. Open the map at SL9 9SZ for neighbourhoods and points.

In: [Buckinghamshire](https://openindex.co.uk/buckinghamshire) › [SL9](https://openindex.co.uk/postcode/sl9) › [SL9 9](https://openindex.co.uk/postcode/sl9-9)

## Around this postcode

- **15 crimes within 500 m**: August, down 12% on July. Buckinghamshire 050B: 75 a year per 1,000 people. (Map point) https://openindex.co.uk/map/street-crime?around=-0.5600,51.6076,SL99SZ
- **Gerrards Cross, 2.1 km**: About 26 minutes on foot. (Exact point) https://openindex.co.uk/map/stations?around=-0.5600,51.6076,SL99SZ
- **3 schools within 800 m**: Nearest is 100 m away. (Exact point) https://openindex.co.uk/map/schools?around=-0.5600,51.6076,SL99SZ
- **No property in SL9 9SZ 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=-0.5600,51.6076,SL99SZ
- **England’s least deprived 20%**: This neighbourhood, Buckinghamshire 050B. (Neighbourhood) https://openindex.co.uk/map/deprivation-england?around=-0.5600,51.6076,SL99SZ
- **£477,450 average price**: For the whole of Buckinghamshire, August 2026. (Council) https://openindex.co.uk/map/house-prices?around=-0.5600,51.6076,SL99SZ
- **3 GP practices within 1 km**: Nearest is 100 m away. (Postcode) https://openindex.co.uk/map/gp-practices?around=-0.5600,51.6076,SL99SZ
- **4 supermarkets within 1 km**: Nearest is 190 m away. (Exact point) https://openindex.co.uk/map/supermarkets?around=-0.5600,51.6076,SL99SZ
- **Gigabit broadband for every home and business at SL9 9SZ**: Superfast for 100%. What can be ordered, January 2026. (Postcode) https://openindex.co.uk/map/broadband-by-postcode?around=-0.5600,51.6076,SL99SZ
- **Low road and rail noise at SL9 9SZ**: Road 47 dB, rail under 40 dB or not modelled (Lden, modelled for 2021) (Postcode) https://openindex.co.uk/map/noise-by-postcode?around=-0.5600,51.6076,SL99SZ
- **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=-0.5600,51.6076,SL99SZ
- **12.2 µg/m³ nitrogen dioxide**: Modelled yearly average for this 1 km square, 2025. (1 km grid) https://openindex.co.uk/map/nitrogen-dioxide?around=-0.5600,51.6076,SL99SZ

## Nearest schools

| School | Phase | Distance | Ofsted | Results |
| --- | --- | --- | --- | --- |
| [Chalfont St Peter CofE Academy](https://openindex.co.uk/school/chalfont-st-peter-cofe-academy-e136726) | Primary | 100 m (1 minute on foot) | Some aspects not as strong, May 2025 | 78% met the expected standard at KS2 (2024/25) |
| [Chalfont St Peter Infant School](https://openindex.co.uk/school/chalfont-st-peter-infant-school-e110269) | Primary | 640 m (8 minutes on foot) | Graded inspection, October 2024: no overall grade | – |
| [The Chalfonts Community College](https://openindex.co.uk/school/the-chalfonts-community-college-e137215) | Secondary | 750 m (9 minutes on foot) | Good (overall), November 2022 | Attainment 8 of 41.1 (2025/26, provisional) |
| [St Joseph's Catholic Primary School](https://openindex.co.uk/school/st-josephs-catholic-primary-school-e148671) | Primary | 1 km (13 minutes on foot) | Improved significantly, May 2025 | 74% met the expected standard at KS2 (2024/25) |
| [Robertswood School](https://openindex.co.uk/school/robertswood-school-e110360) | Primary | 1.1 km (14 minutes on foot) | Good (overall), November 2022 | 64% met the expected standard at KS2 (2024/25) |
| [Maltman's Green School](https://openindex.co.uk/school/maltmans-green-school-e110543) | Independent | 1.2 km (16 minutes on foot) | Not in Ofsted's state-funded schools file | – |
| [Thorpe House School](https://openindex.co.uk/school/thorpe-house-school-e110555) | Independent | 1.4 km (18 minutes on foot) | Not in Ofsted's state-funded schools file | – |
| [Gayhurst School](https://openindex.co.uk/school/gayhurst-school-e110541) | Independent | 1.5 km (19 minutes on foot) | Not in Ofsted's state-funded schools file | – |

## Recent sales nearby

| Month | Price | Home | Distance |
| --- | --- | --- | --- |
| June 2026 | £425,000 | Semi-detached, established, freehold | 10 m |
| January 2025 | £700,000 | Detached, established, freehold | 40 m |
| July 2023 | £633,000 | Detached, established, freehold | 60 m |
| May 2024 | £225,000 | Flat or maisonette, established, leasehold | 80 m |
| September 2024 | £230,000 | Flat or maisonette, established, leasehold | 120 m |
| October 2025 | £730,000 | Detached, established, freehold | 120 m |
| February 2025 | £715,000 | Semi-detached, established, freehold | 130 m |
| April 2026 | £560,000 | Terraced, established, freehold | 150 m |

## Within 1 km

- GP practices: THE ALLAN PRACTICE (100 m); THE HALL PRACTICE (120 m); THE MISBOURNE SURGERY (140 m)
- Pharmacies: RICHARD ADAMS PHARMACY (170 m); VANTAGE PHARMACY (280 m)
- Dental practices: MARKET HOUSE DENTAL SURGERY (160 m); DENTAL SURGERY (420 m)
- Supermarkets: Tesco Chalfont St Peter Express (190 m, Tesco); M&S Chalfont St Peter Foodhall (320 m, Marks and Spencer); Morrisons Daily Chalfont St Peter High St (320 m, Morrisons); Tesco Chalfont St Peter Esso Express (720 m, Tesco)

## Key figures

- **Average house price: £477,450** (August 2026). Buckinghamshire’s average house price was £477,450 in August 2026 (HM Land Registry). No change in a year. Source: UK House Price Index, August 2026. Published 21 October 2026.
- **Median full-time pay: £43,290** (2025). Full-time workers living in Buckinghamshire earned a median of £43,290 in 2025 (ONS earnings survey). 81st highest paid of 348. Source: Annual Survey of Hours and Earnings, 2025. Published 23 October 2025.
- **House price to pay: 11.0×** (2025). A home in Buckinghamshire costs 11.0 times local full-time pay. Joint 34th least affordable of 348. Source: Worked out by Open Index from the UK House Price Index and the ONS earnings survey. Published 21 October 2026.
- **Deprivation score: 11.9** (2025). Buckinghamshire has a deprivation score of 11.9 in the English Indices of Deprivation 2025 (MHCLG). 47th least deprived of 296. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025.

## Buckinghamshire 050B (Neighbourhood)

- **Deprivation score: 7.3** (2025). Buckinghamshire 050B has a deprivation score of 7.3 in the English Indices of Deprivation 2025 (MHCLG). Joint 5,409th least deprived of 33,755. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025.
- **Median sale price: £587,500** (2025). The median price paid for a home in Buckinghamshire 050B was £587,500 in 2025. Joint 2,876th most expensive of 31,750. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026.
- **Population: 1,990** (2021). Buckinghamshire 050B had 1,990 usual residents at the census (ONS Census 2021). Joint 5,442nd 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: 91.0%** (January 2026). In Buckinghamshire 050B, 91.0% 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.

## SL9 (Postcode district)

- **Median sale price: £867,500** (2025). The median price paid for a home in SL9 was £867,500 in 2025. 33rd most expensive of 2,235. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026.
- **Population: 22,256** (2021). SL9 had 22,256 usual residents at the census (ONS Census 2021). 1,326th 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: 95%** (2022). About 95% of people in SL9 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: 92.1%** (January 2026). In SL9, 92.1% 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: [Buckinghamshire](https://openindex.co.uk/buckinghamshire)
- Centre: 51.6076, -0.5600

Council: [Buckinghamshire](https://openindex.co.uk/buckinghamshire) (Unitary authority, 100%).

## Your MP

- [Chesham and Amersham](https://openindex.co.uk/constituency/chesham-and-amersham): Sarah Green (Liberal Democrat), 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), August 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=-0.5600,51.6076,SL99SZ

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/sl9-9sz.

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 2026.10.9. The HTML page: https://openindex.co.uk/postcode/sl9-9sz