SL1
Postcode districtPostcode district covering Slough, Cippenham and Salt Hill, in Slough and 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 SL1 postcode. How census figures are added up
Radon Affected Area by postcode district
Worked out by Open Index · 2022
About 21% of people in SL1 live in a 1 km square that the radon atlas marks as a radon Affected Area.
How SL1 compares
Each dot is a postcode district. The black line marks the middle one.
Is SL1 safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SL1 at a rate of 123.4 per 1,000 people.
That compares with 77.9 per 1,000 people across the SL postcode area.
In August 2026 alone, 877 cases of crime and anti-social behaviour were recorded in SL1.
In the 12 months to August 2026, the most common types were violence and sexual offences (3,826), other crime (2,153) and anti-social behaviour (1,044).
A year earlier, the recorded crime rate in SL1 was 115.3 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 SL1, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so SL1 has no single figure. Of its 42 neighbourhoods with a rank:
- Decile 2: 5 neighbourhoods
- Decile 3: 9 neighbourhoods
- Decile 4: 8 neighbourhoods
- Decile 5: 8 neighbourhoods
- Decile 6: 4 neighbourhoods
- Decile 7: 4 neighbourhoods
- Decile 8: 2 neighbourhoods
- Decile 10 (England’s least deprived 10%): 2 neighbourhoods
English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England.
Neighbourhoods in SL1
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| Buckinghamshire 065A | 1,391 | 57.2 per 1,000 | 8 | 54.1% |
| Buckinghamshire 065B | 1,743 | 49.9 per 1,000 | 10 | 96.1% |
| Buckinghamshire 066A | 1,635 | 132.2 per 1,000 | 8 | 94.4% |
| Buckinghamshire 066B | 1,932 | 51.5 per 1,000 | 5 | 98.0% |
| Buckinghamshire 066D | 1,648 | 65.3 per 1,000 | 7 | 99.7% |
| Buckinghamshire 066E | 1,643 | 53.5 per 1,000 | 6 | 99.8% |
| Slough 002A | 2,114 | 247.6 per 1,000 | 2 | 98.9% |
| Slough 002E | 1,828 | 112.7 per 1,000 | 5 | 99.8% |
| Slough 003A | 1,252 | 43.6 per 1,000 | 7 | 99.6% |
| Slough 003B | 1,906 | 192.3 per 1,000 | 5 | 94.9% |
| Slough 003C | 1,466 | 48.7 per 1,000 | 7 | 100.0% |
| Slough 003D | 1,372 | 69.6 per 1,000 | 4 | 100.0% |
| Slough 003E | 1,423 | 96.6 per 1,000 | 10 | 100.0% |
| Slough 004B | 1,932 | 65.5 per 1,000 | 3 | 100.0% |
| Slough 004C | 1,735 | 47.2 per 1,000 | 4 | 100.0% |
| Slough 004D | 1,882 | 81.8 per 1,000 | 4 | 99.0% |
| Slough 004E | 2,454 | 69.0 per 1,000 | 4 | 99.4% |
| Slough 006A | 1,567 | 109.1 per 1,000 | 4 | 99.3% |
| Slough 006B | 1,995 | 84.0 per 1,000 | 7 | 91.2% |
| Slough 006C | 1,821 | 83.0 per 1,000 | 5 | 98.7% |
| Slough 006D | 1,775 | 93.2 per 1,000 | 6 | 97.9% |
| Slough 006E | 1,472 | 64.7 per 1,000 | 6 | 100.0% |
| Slough 006F | 1,775 | 39.1 per 1,000 | 5 | 100.0% |
| Slough 008A | 2,722 | 55.3 per 1,000 | 6 | 99.9% |
| Slough 008B | 2,167 | 125.1 per 1,000 | 3 | 99.8% |
| Slough 008C | 2,243 | 82.8 per 1,000 | 3 | 99.9% |
| Slough 008D | 1,806 | 71.2 per 1,000 | 5 | 100.0% |
| Slough 008E | 2,844 | 66.9 per 1,000 | 5 | 97.5% |
| Slough 008F | 1,971 | 58.4 per 1,000 | 5 | 100.0% |
| Slough 009A | 2,573 | 262.1 per 1,000 | 3 | 99.6% |
| Slough 009B | 2,032 | 126.2 per 1,000 | 2 | 99.0% |
| Slough 009C | 2,245 | 104.2 per 1,000 | 2 | 99.4% |
| Slough 009D | 2,908 | 171.6 per 1,000 | 3 | 99.5% |
| Slough 009F | 1,798 | 85.2 per 1,000 | 3 | 96.2% |
| Slough 009G | 1,950 | 163.3 per 1,000 | 3 | 99.1% |
| Slough 011A | 2,381 | 150.6 per 1,000 | 2 | 87.1% |
| Slough 011D | 2,045 | 93.7 per 1,000 | 4 | 93.2% |
| Slough 011F | 1,473 | 562.2 per 1,000 | 3 | 84.4% |
| Slough 011G | 1,634 | 179.4 per 1,000 | 3 | 88.6% |
| Slough 015B | 2,313 | 114.7 per 1,000 | 4 | 99.5% |
| Slough 015C | 1,317 | 55.9 per 1,000 | 4 | 99.2% |
| Slough 016D | 2,214 | 325.8 per 1,000 | 2 | 97.7% |
MPs for SL1
- Mr Tanmanjeet Singh DhesiLabourMP for Slough82% of SL1’s postcodes
- Joy MorrisseyConservativeMP for Beaconsfield18% of SL1’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 SL19
Postcode sectors in SL110
Councils SL1 covers2
Towns in SL11
Postcode districts next to SL16
Nearest rail stations4
More in the SL postcode area2
SL1 in brief
SL1 is a postcode district covering Slough, Cippenham and Salt Hill, in Slough and Buckinghamshire.
About 85,032 people lived in SL1 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £395,931 in 2025 across 582 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 123.4 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in SL1 was £395,931 in 2025.
SL1 had 79,692 usual residents at the census.
About 21% of people in SL1 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In SL1, 96.6% of homes and businesses could get gigabit-capable broadband in January 2026.