Schools
23 open schools are in scope, including 17 primary and 1 secondary schools. East Hall School is the nearest published school at 1.2 miles.
Counts describe active establishment records. They do not assess admissions, catchments or quality.
SG4 8WT
Knebworth · North Hertfordshire · England
Updated September 2026
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Nearby postcodes
Complete postcode fields and official codes
- Postcode
- SG4 8WT
- Status
- Current
- Introduced
- 1 June 2000
- Terminated
- Not published
- Postcode area
- SG
- Postcode district
- SG4
- Postcode sector
- SG4 8
- Latitude
- 51.870975
- Longitude
- -0.232581
- British National Grid easting
- 521,777
- British National Grid northing
- 220,631
Statistical and administrative geographies
- Country
- England · E92000001
- Region
- East of England · E12000006
- Local authority district
- North Hertfordshire · E07000099
- Electoral ward
- Knebworth · E05015768
- Parish or community
- E04004783
- Westminster constituency
- Stevenage · E14001516
- Output area
- E00120007
- Lower layer super output area
- North Hertfordshire 015D · E01023627
- Middle layer super output area
- North Hertfordshire 015 · E02004923
Postcode source versions
- Ordnance Survey: Code-Point Open Version 2026-08 · Current postcode units in Great Britain · OGL-3.0
- Office for National Statistics: ONS Postcode Directory Version 2026-08 · United Kingdom; Northern Ireland excluded pending rights review; Crown Dependencies outside product scope · OGL-3.0 with third-party rights
- Ordnance Survey: Boundary-Line Version 2026-05 · Local-authority boundaries in Great Britain · OS OpenData Licence
Explore SG4
Property
1 recorded
sale at this postcode
| Address | Date | Price |
|---|---|---|
| Lytton Lodge, Hitchin Road, Codicote, Hitchin, SG4 8WT | 31 August 1999 | £1,001,000 |
Schools
Within 3.1 miles of this postcode
- Open schools
- 23
- Primary
- 17
- Secondary
- 1
- 1.9 km
East Hall School
Other independent special school
- 2.6 km
Codicote Church of England Primary School
Voluntary controlled school
- 3.1 km
St Margaret Clitherow Roman Catholic Primary School
Voluntary aided school
Recorded crime
Within 1 mile of this postcode
- Published events
- 16
- Months covered
- 12
- Latest month
- June 2026
Most recorded categories in this period
- Violence and sexual offences 5
- Burglary 2
- Other theft 2
- Shoplifting 2
- Anti social behaviour 2
Census 2021
Population and age profile
- Postcode residents
- 1
- Postcode households
- 1
- Residents per household
- 1.0
- SG4 8 residents
- 6,657
0 female, 1 male
Age bands in SG4 8
Wider postcode sector- Age 0 to 14
- 17.2%
- Age 15 to 24
- 9%
- Age 25 to 44
- 20.8%
- Age 45 to 64
- 29.9%
- Age 65 and over
- 23.2%
1,179 residents
614 residents
1,424 residents
2,047 residents
1,589 residents
This postcode contained 0% of the sector's usual residents on Census Day. The age profile describes the wider SG4 8 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.
Fixed broadband coverage
Ofcom's predicted availability across all residential and commercial premises in this postcode in January 2026.
- Superfast, 30 Mbit/s+
- 100%
- Ultrafast, 100 Mbit/s+
- 100%
- Ultrafast, 300 Mbit/s+
- 100%
- Gigabit-capable
- 100%
- Unable to receive decent fixed or FWA broadband
- 0%
- Next Generation Access
- 100%
- Decent broadband available from fixed wireless
- 0%
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.
GP practices
6
within 5 km
WHITWELL SURGERY
60 HIGH STREET, WHITWELL, HITCHIN, SG4 8AG
ODS code E82626
3.2 km
KNEBWORTH & MARYMEAD PRACTICE
7 ST MARTINS ROAD, KNEBWORTH, SG3 6ER
ODS code E82035
3.6 km
KING GEORGE & MANOR HOUSE SURGERIES
KING GEORGE SURGERY(MAIN), 135 HIGH STREET, STEVENAGE, SG1 3HT
ODS code E82086
4.4 km
BRIDGE COTTAGE SURGERY
41 HIGH STREET, WELWYN, AL6 9EF
ODS code E82019
4.7 km
THE SYMONDS GREEN HEALTH CENTRE
FILEY CLOSE, STEVENAGE, SG1 2JW
ODS code E82111
4.7 km
SHEPHALL HEALTH CENTRE
RIDLINS END, STEVENAGE, SG2 9QZ
ODS code E82056
5.0 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.
Nearby transport
- 0.6 miles
Drivers End Lane
BCT · Codicote
- 0.6 miles
Drivers End Lane
BCT · Codicote
- 0.6 miles
The Green
BCT · Nup End
- 0.6 miles
The Green
BCT · Nup End
- 0.7 miles
Lytton Arms PH
BCT · Old Knebworth
Relative deprivation
English Indices of Deprivation 2025 for North Hertfordshire 015D, 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
28,342 of 33,755
- Income
- 10 of 10
- Employment
- 9 of 10
- Education and skills
- 9 of 10
- Health and disability
- 10 of 10
- Crime
- 8 of 10
- Housing and services
- 4 of 10
- Living environment
- 3 of 10
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.
Flood risk
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.
- High risk addresses
- 0
- Medium risk addresses
- 0
- Low risk addresses
- 0
- Groundwater flood alert area
- Unlikely
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.
Evidence in context
Recorded crime
16 published events cover 12 months, averaging 1.333 events per published month. The largest recorded category is Violence and sexual offences with 5 events.
The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.