Welwyn East · Welwyn Hatfield · England
Updated September 2026
Compare this postcode| Address | Date | Price |
|---|---|---|
| 4, Mardleybury Court, Woolmer Green, Knebworth, SG3 6LP | 18 December 2025 | £300,000 |
| 11, Mardleybury Court, Woolmer Green, Knebworth, SG3 6LP | 6 August 2025 | £270,000 |
| 3, Mardleybury Court, Woolmer Green, Knebworth, SG3 6LP | 21 February 2025 | £355,000 |
Within 3.1 miles of this postcode
St Michael's Woolmer Green CofE VA Primary School
Voluntary aided school
All Saints Church of England Voluntary Aided Primary School, Datchworth
Voluntary aided school
Knebworth Primary and Nursery School
Community school
Within 1 mile of this postcode
Census 2021
14 female, 16 male
1,165 residents
655 residents
1,665 residents
2,066 residents
1,576 residents
This postcode contained 0.4% of the sector's usual residents on Census Day. The age profile describes the wider SG3 6 sector, not people in this individual postcode.
Small counts are adjusted for privacy, so totals can differ slightly between Census tables.
Census Day: 21 March 2021. Sources: ONS/Nomis P001-P004 and ONS CT21_0228. Age table version 2024-04-08.
Ofcom's predicted availability across all residential and commercial premises in this postcode in January 2026.
Predicted coverage, not measured speeds. Check availability for your address with a provider. Postcode-level full-fibre figures are not published in this release.
Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.
4
within 5 km
7 ST MARTINS ROAD, KNEBWORTH, SG3 6ER
ODS code E82035
1.7 km
41 HIGH STREET, WELWYN, AL6 9EF
ODS code E82019
3.4 km
RIDLINS END, STEVENAGE, SG2 9QZ
ODS code E82056
4.5 km
HIGH STREET, WATTON AT STONE, HERTFORD, SG14 3SY
ODS code E82121
4.5 km
Main GP practices only; branch surgeries are excluded. Distances are straight-line. Contact the practice to check registration, services, opening hours and appointments.
Source acquired on 2026-09-05. Contains information from NHS England, licenced under the current version of the Open Government Licence.
Oak Road
BCT · Woolmer Green
Oak Road
BCT · Woolmer Green
Red Lion PH
BCT · Woolmer Green
Red Lion PH
BCT · Woolmer Green
Wickfield
BCT · Woolmer Green
English Indices of Deprivation 2025 for Welwyn Hatfield 001C, the published LSOA linked to this postcode. Decile 1 contains the most deprived 10% of English LSOAs and decile 10 the least deprived 10%.
Overall IMD decile
9 of 10
Overall England rank
27,739 of 33,755
These are relative area statistics, not measures of an individual household, affluence or absolute change. They cannot be compared with indices for other UK nations. Source: English Indices of Deprivation 2025, version 2025-v2.
Environment Agency long-term indicators for the area around addresses in this postcode. They are not an assessment of any individual property and do not show current or forecast flooding.
Source: Environment Agency flood-risk postcode search tool data, version 2026-06-18. Check the long-term risk for an individual area. © Environment Agency copyright and/or database right 2025. All rights reserved.
The five-year median is £300,000 from 3 recorded sales in SG3 6LP. This is a recorded-sale statistic, not a current valuation.
The latest UK House Price Index average for Welwyn Hatfield is £450,696 in June 2026, up 5.8% year on year.
29 open schools are in scope, including 21 primary and 2 secondary schools. St Michael's Woolmer Green CofE VA Primary School is the nearest published school at 108 m.
Counts describe active establishment records. They do not assess admissions, catchments or quality.
234 published events cover 12 months, averaging 19.5 events per published month. The largest recorded category is Violence and sexual offences with 102 events.
The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.