The UK Postcode Database

AL4 9SL

a postcode in Hertfordshire

Introduced in January 1980
AL4 9SL 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 AL4 9SL

Windmill Avenue - 19 properties, USRN 37321872

Chiltern Road - 6 properties, USRN 37303735

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

Coordinates

Latitude: 51.7713 / 51°46'16"N

Longitude: -0.3032 / 0°18'11"W

UTM Reference: 30U 686062 5739044

OS Easting: 517173

OS Northing: 209431

OS Grid: TL171094

Location Encoding

Mapcode Local: GBR H7Z.VJ6

Mapcode Global: VHGPJ.PQKZ

Open Location Code: 9C3XQMCW+GP

Maidenhead Locator System: IO91us35

Demographics

Urban/Rural Indicator: C1

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

ONS Population Classification: 5b1

  • Ethnically Diverse Suburb-an Professionals
  • Suburban Professionals
  • Families in Multi-Ethnic Terraces

Index of Multiple Deprivation (IMD): 30830 / 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 AL4 9SL on Friday 12 June 2026

Nautical twilight begins (First light) 02:39
Civil twilight begins (Dawn) 03:54
Sunrise 04:42
Transit (sun is at its highest) 13:01
Sunset 21:19
Civil twilight ends (Dusk) 22:07
Nautical twilight ends (Nightfall) 23:22
Hours of daylight today04:12 to 21:49
Hours of darkness tonight
(lighting-up time)
21:49 to 04:12
Moon Phase Waning Crescent
Moon Rises 01:19
Moon sets 17:46

For a full sun and moon calendar for AL4 9SL, go to The Time and Place

Residential Property Sales in AL4 9SL

DateAddressProperty TypeTenurePrice
20 April 2023 117 Windmill Avenue, St Albans AL4 9SL Terraced (including end-of-terrace) Freehold £470,000
15 August 2022 121 Windmill Avenue, St Albans AL4 9SL Terraced (including end-of-terrace) Freehold £530,000
18 October 2021 101 Windmill Avenue, St Albans AL4 9SL Terraced (including end-of-terrace) Freehold £450,000
18 June 2021 129 Windmill Avenue, St Albans AL4 9SL Terraced (including end-of-terrace) Freehold £418,000
30 August 2018 117 Windmill Avenue, St Albans AL4 9SL Terraced (including end-of-terrace) Freehold £385,000
10 August 2018 103 Windmill Avenue, St Albans AL4 9SL Terraced (including end-of-terrace) Freehold £375,000
5 February 2016 129 Windmill Avenue, St Albans AL4 9SL Terraced (including end-of-terrace) Freehold £335,000
11 March 2015 105 Windmill Avenue, St Albans AL4 9SL Terraced (including end-of-terrace) Freehold £285,000
9 April 2009 109 Windmill Avenue, St Albans AL4 9SL Semi-detached Freehold £175,000
6 January 2009 115 Windmill Avenue, St. Albans AL4 9SL Flat/apartment Freehold £195,000
14 July 2008 129 Windmill Avenue, St. Albans AL4 9SL Terraced (including end-of-terrace) Freehold £249,950
8 May 2006 109 Windmill Avenue, St. Albans AL4 9SL Semi-detached Freehold £195,000
11 March 2005 127 Windmill Avenue, St. Albans AL4 9SL Terraced (including end-of-terrace) Freehold £195,000
6 September 2004 109 Windmill Avenue, St. Albans AL4 9SL Semi-detached Freehold £175,000
22 June 2001 105 Windmill Avenue, St. Albans AL4 9SL Terraced (including end-of-terrace) Freehold £130,000
28 August 2000 109 Windmill Avenue, St. Albans AL4 9SL Semi-detached Freehold £73,000
18 September 1998 129 Windmill Avenue, St. Albans AL4 9SL Terraced (including end-of-terrace) Freehold £91,500
6 March 1995 101 Windmill Avenue, St. Albans AL4 9SL Terraced (including end-of-terrace) Freehold £73,000

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 AL4 9SL

United Kingdom Parliament
Constituency

St Albans

MP

Daisy Cooper Liberal Democrat

Hertfordshire County Council
County council electoral division

Colney Heath & Marshalswick

Councillor

John Hale Liberal Democrats

St Albans City and District Council
District council ward

Marshalswick East & Jersey Farm

Councillors

Lorraine Kirby Liberal Democrats

Raihaanah Ahmed Liberal Democrats

Raj Visram Liberal Democrats

AL4 9SL also falls within the Civil Parish of Sandridge, which has its own parish council and parish councillors. These are not shown here.

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

Government Statistical Services (GSS) data for AL4 9SL

CodeNameData TypeData ThemeActive SinceData Owner
E00120413 Output Areas Statistical Building Block 1 January 2009 ONS
E01023711 St Albans 008C Lower layer Super Output Areas Statistical Building Block 1 February 2004 ONS
E02004931 St Albans 008 Middle layer Super Output Areas Statistical Building Block 1 August 2004 ONS
E04013286 Sandridge Civil Parishes Administrative 1 April 2023 DLUHC
E05015801 Marshalswick East & Jersey Farm Electoral Wards/Divisions Administrative/Electoral 2 May 2024 DLUHC
E07000240 St Albans Non-metropolitan Districts Administrative 1 April 2012 DLUHC
E10000015 Hertfordshire Counties Administrative 1 January 2009 DLUHC
E12000006 East of England Regions Administrative 1 January 2009 DLUHC
E14001507 St Albans Westminster Parliamentary Constituencies Electoral 4 July 2024 LGBC
E23000027 Hertfordshire Police Force Areas Other 1 January 2009 Home Office
E30000237 Luton Travel to Work Areas Other 31 July 2015 ONS
E33027431 Workplace Zones Census 31 December 2011 ONS
E37000048 Hertfordshire Local Enterprise Partnerships Other 1 April 2020 BEIS
E38000079 NHS Herts Valleys Sub Integrated Care Board Locations Health 1 April 2015 ODS
E40000007 East of England NHS England Regions Health 1 April 2019 ODS
E54000025 NHS Hertfordshire and West Essex Integrated Care Board Integrated Care Boards Health 1 July 2022 ODS
E56000035 East of England Cancer Alliances Health 1 April 2024 NHS England
E58000618 Colney Heath & Marshalswick ED County Electoral Divisions Electoral 4 May 2017 DLUHC
E63011552 St Albans 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

All public sector data is licensed under the Open Government Licence v2.0.

The UK Postcode Database is a Good Stuff website.

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