SL6 4JJ

a postcode in Windsor and Maidenhead

Introduced in January 1980

SL6 4JJ	Normal (geographic) postcodes	Large user postcodes

The nearby postcodes map only shows currently active postcodes. Postcode markers will cluster if they are close together, which may happen in densly populated built-up areas or where single premises have multiple postcodes.

Streets Associated with SL6 4JJ

Castle Hill - 36 properties, USRN 44400292

Street names are those nearest to properties in this postcode, they are not necessarily the postal address

Coordinates

Latitude: 51.5227 / 51°31'21"N

Longitude: -0.7265 / 0°43'35"W

UTM Reference: 30U 657726 5710405

OS Easting: 488453

OS Northing: 181189

OS Grid: SU884811

Location Encoding

Mapcode Local: GBR D6J.H4X

Mapcode Global: VHDWK.CZ9K

Open Location Code: 9C3XG7FF+3C

Maidenhead Locator System: IO91pm25

Demographics

Urban/Rural Indicator: C1

urban city or town
a town or city, surrounded by populated countryside

ONS Population Classification: 5a3

Ethnically Diverse Suburb-an Professionals
Outer Suburbs
Young Suburban Families

Index of Multiple Deprivation (IMD): 31951 / 32844

10th decile
least deprived

Demographics are based on the LSOA containing this postcode and not necessarily this postcode alone

Sun and Moon Times for SL6 4JJ on Saturday 20 June 2026

Nautical twilight begins (First light)	02:42
Civil twilight begins (Dawn)	03:57
Sunrise	04:45
Transit (sun is at its highest)	13:04
Sunset	21:23
Civil twilight ends (Dusk)	22:11
Nautical twilight ends (Nightfall)	23:26

Hours of daylight today	04:15 to 21:53
Hours of darkness tonight (lighting-up time)	21:53 to 04:15
Moon Phase	Waxing Crescent
Moon Rises	10:15
Moon sets	23:41

For a full sun and moon calendar for SL6 4JJ, go to The Time and Place

Residential Property Sales in SL6 4JJ

Date	Address	Property Type	Tenure	Price
22 August 2023	24 Castle Hill, Maidenhead SL6 4JJ	Semi-detached	Freehold	£820,000
27 July 2022	16 Castle Hill, Maidenhead SL6 4JJ	Semi-detached	Freehold	£935,000
7 December 2020	30 Castle Hill, Maidenhead SL6 4JJ	Semi-detached	Freehold	£1,110,000
27 April 2018	38b Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£222,500
4 August 2017	38 Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£200,000
6 January 2014	18c Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£184,950
31 July 2013	32 Castle Hill, Maidenhead SL6 4JJ	Terraced (including end-of-terrace)	Freehold	£640,000
13 October 2010	38 Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£125,000
22 December 2008	18a Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£250,000
29 March 2007	18c Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£166,000
3 October 2005	38 Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£136,000
17 June 2005	38b Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£133,400
4 August 2004	38b Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£84,000
30 January 2004	32 Castle Hill, Maidenhead SL6 4JJ	Terraced (including end-of-terrace)	Freehold	£455,000
21 May 2003	18b Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£108,000
20 December 2002	18c Castle Hill, Maidenhead SL6 4JJ	Semi-detached	Leasehold	£142,000
27 November 2002	38a Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£110,000
5 November 2002	38 Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£110,000
13 September 2001	First Floor Flat, 20 Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£87,000
5 March 2001	28 Castle Hill, Maidenhead SL6 4JJ	Semi-detached	Freehold	£500,000
27 October 1999	28 Castle Hill, Maidenhead SL6 4JJ	Semi-detached	Freehold	£235,100
29 January 1999	38b Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£71,500
24 July 1998	18b Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£59,950
19 December 1997	18c Castle Hill, Maidenhead SL6 4JJ	Semi-detached	Leasehold	£69,000
15 November 1996	38b Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£45,000
5 May 1995	38b Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£37,500
3 April 1995	38b Castle Hill, Maidenhead SL6 4JJ	Flat/apartment	Leasehold	£22,000

Key to property sale icons:

	First sale of newbuild property. This includes new properties created from existing properties, such as residential conversions of commercial or agricultural property, or subdivision of a larger residential property.
	Subsequent sale of existing property.
	Standard sale at market value to private individual.
	Additional (non-standard) sale. This includes repossessions, buy-to-lets and transfers of property sold to non-private individuals.

Elected Representatives for SL6 4JJ

United Kingdom Parliament

Constituency

Maidenhead

MP

Joshua Reynolds Liberal Democrat

Windsor and Maidenhead Council

Unitary Authority ward (UTW)

St Mary's

Councillors

Jack Douglas Liberal Democrats

Gurch Singh Liberal Democrats

Elected representative data is updated approximately monthly, so may not include recent by-elections or vacancies.

Government Statistical Services (GSS) data for SL6 4JJ

Code	Name	Data Type	Data Theme	Active Since	Data Owner
E00083430		Output Areas	Statistical Building Block	1 January 2009	ONS
E01016525	Windsor and Maidenhead 005A	Lower layer Super Output Areas	Statistical Building Block	1 February 2004	ONS
E02003425	Windsor and Maidenhead 005	Middle layer Super Output Areas	Statistical Building Block	1 August 2004	ONS
E05012511	St Mary's	Electoral Wards/Divisions	Administrative/Electoral	2 May 2019	DLUHC
E06000040	Windsor and Maidenhead	Unitary Authorities	Administrative	1 January 2009	DLUHC
E12000008	South East	Regions	Administrative	1 January 2009	DLUHC
E14001348	Maidenhead	Westminster Parliamentary Constituencies	Electoral	4 July 2024	LGBC
E23000029	Thames Valley	Police Force Areas	Other	1 January 2009	Home Office
E30000266	Slough and Heathrow	Travel to Work Areas	Other	31 July 2015	ONS
E33037182		Workplace Zones	Census	31 December 2011	ONS
E37000035	Thames Valley Berkshire	Local Enterprise Partnerships	Other	28 October 2010	BEIS
E38000252	NHS Frimley ICB - D4U1Y	Sub Integrated Care Board Locations	Health	1 July 2022	ODS
E40000005	South East	NHS England Regions	Health	1 April 2018	ODS
E43000259	Windsor and Maidenhead, unparished area	Non-Civil Parished Areas	Census	1 April 2019	ONS
E54000034	NHS Frimley Integrated Care Board	Integrated Care Boards	Health	1 July 2022	ODS
E56000012	Surrey and Sussex	Cancer Alliances	Health	1 September 2016	NHS England
E63012044	Maidenhead	Built Up Areas	Census	17 April 2024	OS
E65000001	England Non-National Park Area	England Non-National Park Area	Census	27 February 2023	ONS
E92000001	England	Country	Administrative	1 January 2009	ONS

The UK Postcode Database