SL9
Postcode districtPostcode district covering Chalfont St Peter, Gerrards Cross and Chalfont Common, in Buckinghamshire.
Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an SL9 postcode. How census figures are added up
Gigabit coverage by postcode district
Connected Nations (Ofcom) · January 2026
In SL9, 92.1% of homes and businesses could get gigabit-capable broadband in January 2026.
How SL9 compares
Each dot is a postcode district. The black line marks the middle one.
Is SL9 safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SL9 at a rate of 46.5 per 1,000 people.
That compares with 77.9 per 1,000 people across SL.
In August 2026 alone, 93 cases of crime and anti-social behaviour were recorded in SL9.
In the 12 months to August 2026, the most common types were violence and sexual offences (347), other crime (218) and anti-social behaviour (121).
A year earlier, the recorded crime rate in SL9 was 47.0 per 1,000 people.
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.
Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.
Deprivation in SL9, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so SL9 has no single figure. Of its 13 neighbourhoods with a rank:
- Decile 8: 3 neighbourhoods
- Decile 9: 4 neighbourhoods
- Decile 10 (England’s least deprived 10%): 6 neighbourhoods
English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England.
Neighbourhoods in SL9
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| Buckinghamshire 050A | 1,533 | 44.9 per 1,000 | 9 | 94.1% |
| Buckinghamshire 050B | 1,990 | 74.7 per 1,000 | 9 | 91.0% |
| Buckinghamshire 050C | 1,497 | 29.5 per 1,000 | 10 | 94.5% |
| Buckinghamshire 050D | 1,184 | 63.9 per 1,000 | 10 | 82.9% |
| Buckinghamshire 050E | 1,358 | 11.6 per 1,000 | 9 | 76.2% |
| Buckinghamshire 054A | 2,141 | 26.4 per 1,000 | 10 | 85.8% |
| Buckinghamshire 054B | 1,300 | 48.9 per 1,000 | 8 | 98.4% |
| Buckinghamshire 054C | 2,379 | 47.4 per 1,000 | 9 | 92.1% |
| Buckinghamshire 058A | 2,086 | 52.0 per 1,000 | 8 | 97.1% |
| Buckinghamshire 058B | 1,670 | 31.8 per 1,000 | 10 | 98.0% |
| Buckinghamshire 058C | 1,782 | 124.9 per 1,000 | 10 | 98.2% |
| Buckinghamshire 058D | 1,612 | 23.5 per 1,000 | 8 | 89.3% |
| Buckinghamshire 058E | 2,111 | 20.0 per 1,000 | 10 | 96.0% |
MPs for SL9
- Sarah GreenLiberal DemocratMP for Chesham and Amersham97% of SL9’s postcodes
- Joy MorrisseyConservativeMP for Beaconsfield3.0% of SL9’s postcodes
- Mr Gagan MohindraConservativeMP for South West Hertfordshire0.3% of SL9’s postcodes
As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.
Middle areas in SL93
Postcode sectors in SL95
Council1
Towns in SL92
Postcode districts next to SL96
Nearest rail stations4
More in the SL postcode area2
SL9 in brief
SL9 is a postcode district covering Chalfont St Peter, Gerrards Cross and Chalfont Common, in Buckinghamshire.
About 23,047 people lived in SL9 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £867,500 in 2025 across 324 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 46.5 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in SL9 was £867,500 in 2025.
SL9 had 22,256 usual residents at the census.
In SL9, 92.1% of homes and businesses could get gigabit-capable broadband in January 2026.
In SL9, 1.9% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026.