SL4 1SU Windsor and Maidenhead
Live postcode, introduced January 1980. Ward: Eton & Castle. Region: South East.
Streets
- Charles House, Windsor: 13 addresses
- Ward Royal, Windsor: 1 address
Council tax
What each band costs in Windsor and Maidenhead in 2026-27: Band D £1,953 a year on average, including the police, fire and any county and parish charges.
| A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|
| £1,302 | £1,519 | £1,736 | £1,953 | £2,387 | £2,820 | £3,254 | £3,905 |
Homes by band in the neighbourhood around this postcode: most are in band C (22% of about 1,080 homes).
Planning and heritage
- Conservation area: no postcode centre in this postcode is in one.
- Listed buildings within 100 m of this postcode: none.
- Article 4 direction (removing permitted development rights): none recorded, though not every council has published theirs.
- Tree preservation orders: none recorded, though not every council has published theirs.
- Green belt: no.
Brownfield land registered for housing within 1.0 km
- Minton Place Victoria Street Windsor SL4 1EG (280 m)
- Minton Place, Victoria Street, Windsor: up to 100 homes, not permissioned (360 m)
- Windsor Business Quarter, 67 Alma Road, Windsor: up to 315 homes, pending decision (510 m)
- Windsor and Eton Riverside Station Car Park: up to 30 homes, not permissioned (760 m)
- Windsor and Eton Riverside Station Car Park, REC (830 m)
- King Edward VII Hospital, Windsor: up to 47 homes, not permissioned (910 m)
Flood risk
Rivers, the sea or surface water: in this postcode, 0 addresses are in areas at high risk, 0 at medium risk and 12 at low risk. Each address counts once, at the higher of its rivers-and-sea and surface-water risk.
Rivers and the sea alone: of the 12 homes the Environment Agency counts, 0 are in areas at high risk, 0 medium, 12 low and 0 very low.
High: 3.3% (1 in 30) or more chance of flooding a year. Medium: 1% to 3.3%. Low: 0.1% to 1%. Very low: under 0.1%. The rivers and sea figures allow for flood defences. Counts cover whole postcodes, which can include other streets.
Flood zone for planning: the postcode centre is in flood zone 3. Zone 3 is a 1% (1 in 100) or greater annual chance of flooding from rivers, or 0.5% from the sea, ignoring defences.
Height above sea level
The postcode's addresses are about 20 m above sea level.
Broadband
Superfast 100%, ultrafast 100%, gigabit 100% of premises; 0% cannot get 10 Mbit/s. Ofcom Connected Nations, data as at January 2026.
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | Windsor and Eton Central 1.7 million journeys in 2024–25 | 280 m |
| Windsor and Eton Riverside 1.1 million journeys in 2024–25 | 650 m | |
| Datchet 228,000 journeys in 2024–25 | 2.4 km | |
| Bus stops | 9 stops within 400 m, 27 within 800 m; nearest Arthur Road Windsor | 60 m |
| Bus or coach station | Brunel Way Slough Town Centre | 3.6 km |
| Car parks | 6 within 800 m; nearest Parking space on Christian Square, SL4 | 90 m |
| EV charging points | 10 within 1.6 km; nearest Connected Kerb Charging Station | 470 m |
| Airport with scheduled flights | London Heathrow Airport LHR | 10.8 km |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | 4 practices within 1.6 km; nearest Clarence Medical Centre | 420 m |
| Pharmacies | 5 pharmacies within 1.6 km; nearest Superdrug Pharmacy | 330 m |
| NHS dentists | 11 practices within 1.6 km; nearest Oxford Road Dental Surgery | 220 m |
| Hospital | Hrh Princess Christian's Hospital | 280 m |
| Police station | Thames Valley Police - Windsor Police Station | 520 m |
| Cash machines | 4 machines within 800 m; nearest *deposit & Withdrawal* The Southern Co-operative Windsor Arthur Road | 90 m |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Park or garden | 5 within 800 m; nearest Alexandra Gardens 2.7 ha | 210 m |
| Largest park within 800 m | Windsor Great Park 1,171 ha | 740 m |
| Play area | 4 within 800 m; nearest Unnamed 640 m² | 430 m |
| Playing field | 4 within 800 m; nearest Unnamed 3.3 ha | 470 m |
| Allotments | 3 within 800 m; nearest Unnamed 3,520 m² | 680 m |
Within 800 m: 5 parks and gardens, 1,193 hectares in all.
Landmarks
The nearest historic landmark is Guildhall, a listed building (Grade I), 490 m east. 286 listed buildings are within 1.0 km, 2 of them Grade I and 21 of them Grade II*.
| Name | What it is | From the postcode's centre |
|---|---|---|
| Guildhall | Listed building, Grade I | 490 m east |
| Railway Bridge Carrying the Winsor Slough Line Over the Thames | Listed building, Grade II* | 530 m north-west |
| 5 and 6, Church Street | Listed building, Grade II* | 530 m east |
| Sir Christopher Wren Hotel | Listed building, Grade II* | 540 m north-east |
| Windsor Castle | Scheduled monument | 720 m east |
| Eton College | Registered park or garden, Grade II | 1.4 km north-east |
| The Royal Estate, Windsor: Windsor Castle and Home Park | Registered park or garden, Grade I | 1.4 km east |
| Moated site at Moat Park, New Windsor | Scheduled monument | 1.7 km south |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 13.0 | 40 | 10 |
| Fine particles (PM2.5) | 7.6 | 20 | 5 |
| Particles (PM10) | 11.5 | 40 | 15 |
All three are within the UK legal limits; nitrogen dioxide and PM2.5 are above the WHO guideline, as in most towns and cities.
Road and rail noise
| Level | Road traffic | Railways |
|---|---|---|
| 55 to 59 | 1 | 0 |
| Under 55 | 13 | 14 |
1 of the postcode's 14 addresses is modelled at 55 dB or more from road traffic, above the WHO guidelines.
People and work
Who lives here
| Around this postcode | England | |
|---|---|---|
| Median age | 38 | 40 |
| Children under 15 | 16% | 17% |
| Aged 65 and over | 14% | 18% |
Homes
| Around this postcode | England | |
|---|---|---|
| Owned (outright or with a mortgage) | 42% | 61% |
| Owned outright | 20% | 33% |
| Shared ownership | 0% | 1% |
| Social rented | 20% | 17% |
| Private rented | 38% | 21% |
Work and commuting
| Around this postcode | England | |
|---|---|---|
| Adults (16 and over) in work | 70% | 57% |
| Unemployment (of those working or looking for work) | 5% | 6% |
| Retired (of adults) | 15% | 22% |
| Long-term sick or disabled (of adults) | 2% | 4% |
| Work mainly from home (of those in work) | 28% | 32% |
| Travel to work by car or van | 37% | 48% |
| By train, Underground, metro or tram | 4% | 4% |
| By any public transport, including bus | 5% | 8% |
| On foot or by bicycle | 27% | 10% |
| Work within 10 km of home (of those who travel to work) | 71% | 65% |
| Work 30 km or more away | 6% | 8% |
Education and languages
| Around this postcode | England | |
|---|---|---|
| Degree or other higher qualification, Level 4+ (of adults) | 40% | 34% |
| No qualifications | 15% | 18% |
| Apprenticeship as highest qualification | 8% | 5% |
| Main language English (aged 3 and over) | 75% | 91% |
| Cannot speak English well or at all | 6% | 2% |
Deprivation
The neighbourhood around this postcode is in decile 8 of 10 on the English Indices of Deprivation 2025, where 1 is the most deprived tenth of England's 33,755 neighbourhoods and 10 the least.
The full dossier for this postcode's main street is on Charles House.