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SG3 6DF

Knebworth · North Hertfordshire · England

Updated September 2026

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Location overview

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Post town
Knebworth
Ward
Knebworth
Local authority
North Hertfordshire
Constituency
Stevenage
Postcode district
SG3
Postcode sector
SG3 6

Nearby postcodes

Nearby postcode distances
Postcode Distance
SG3 6AP 52 m
SG3 6EU 90 m
SG3 6DB 91 m
SG3 6HL 131 m
SG3 6AU 132 m
Complete postcode fields and official codes
Postcode
SG3 6DF
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
SG
Postcode district
SG3
Postcode sector
SG3 6
Latitude
51.866112
Longitude
-0.185392
British National Grid easting
525,039
British National Grid northing
220,170

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
E00120000
Lower layer super output area
North Hertfordshire 015E · E01023628
Middle layer super output area
North Hertfordshire 015 · E02004923

Postcode source versions

Explore SG3

Use the wider postcode district to compare the same evidence across more locations.

Property

At this postcode

View all property records
46 recorded sales at this postcode
Address Date Price
Strafford Court, 18, Pondcroft Road, Knebworth, SG3 6DF 3 February 2025 £260,000
Strafford Court, 4, Pondcroft Road, Knebworth, SG3 6DF 16 December 2024 £223,500
Strafford Court, 19, Pondcroft Road, Knebworth, SG3 6DF 26 November 2021 £270,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
30
Primary
20
Secondary
2

  1. Knebworth Primary and Nursery School

    Community school

    258 m

  2. St Michael's Woolmer Green CofE VA Primary School

    Voluntary aided school

    1.7 km

  3. All Saints Church of England Voluntary Aided Primary School, Datchworth

    Voluntary aided school

    1.8 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
460
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 192
  • Anti social behaviour 77
  • Criminal damage and arson 35
  • Shoplifting 33
  • Public order 29

Census 2021

Population and age profile

Postcode residents
38

18 female, 20 male

Postcode households
19
Residents per household
2.0
SG3 6 residents
7,208

Age bands in SG3 6

Wider postcode sector
Age 0 to 14
16.3%

1,165 residents

Age 15 to 24
9.2%

655 residents

Age 25 to 44
23.4%

1,665 residents

Age 45 to 64
29%

2,066 residents

Age 65 and over
22.1%

1,576 residents

This postcode contained 0.5% of the sector's usual residents on Census Day. The age profile describes the wider SG3 6 sector, not people in this individual postcode.

How to read these estimates
The standard postcode headcounts and the commissioned age table are separate ONS outputs. Small counts are disclosure-controlled, and totals can differ slightly between tables. Coverage is England and Wales only.

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%
Coverage is a modelled postcode-level snapshot, not a speed test or a guarantee for a named property. Check availability with providers before making a decision. Ofcom does not publish postcode-level full-fibre coverage in this release for commercial-confidentiality reasons.

Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.

NHS ODS

GP practices

6

within 5 km

  • KNEBWORTH & MARYMEAD PRACTICE

    7 ST MARTINS ROAD, KNEBWORTH, SG3 6ER

    ODS code E82035

    336 m

  • SHEPHALL HEALTH CENTRE

    RIDLINS END, STEVENAGE, SG2 9QZ

    ODS code E82056

    3.0 km

  • BEDWELL MEDICAL CENTRE

    SINFIELD CL, BEDWELL CRES, STEVENAGE, SG1 1LQ

    ODS code E82093

    4.2 km

  • BRIDGE COTTAGE SURGERY

    41 HIGH STREET, WELWYN, AL6 9EF

    ODS code E82019

    4.5 km

  • KING GEORGE & MANOR HOUSE SURGERIES

    KING GEORGE SURGERY(MAIN), 135 HIGH STREET, STEVENAGE, SG1 3HT

    ODS code E82086

    4.8 km

  • WATTON PLACE CLINIC

    HIGH STREET, WATTON AT STONE, HERTFORD, SG14 3SY

    ODS code E82121

    4.9 km

Organisation records, not service availability
These are records marked active in NHS England's Organisation Data Service for England and Wales. Branch surgeries, pharmacies, dentists and hospitals are not included. They do not confirm patient registration, services, opening hours, appointments or care quality. Distances are straight-line from the postcode point.

Source acquired on 2026-09-03. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Nearby transport

  • Station Road

    BCT · Knebworth

    0.1 miles

  • Station Road

    BCT · Knebworth

    0.1 miles

  • Knebworth Rail Station

    RLY · Knebworth

    0.1 miles

  • Knebworth Rail Station

    RSE · Knebworth

    0.1 miles

  • Knebworth Railway Station

    BCT · Knebworth

    0.1 miles

Relative deprivation

English Indices of Deprivation 2025 for North Hertfordshire 015E, 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

10 of 10

Overall England rank

30,498 of 33,755

Income
9 of 10
Employment
9 of 10
Education and skills
10 of 10
Health and disability
10 of 10
Crime
8 of 10
Housing and services
9 of 10
Living environment
4 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
11
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

A factual reading of the data in this report's scope. It is not a location score or a recommendation.

Property market

Recorded sales

The five-year median is £241,750 from 4 recorded sales in SG3 6DF. This is a recorded-sale statistic, not a current valuation.

The latest UK House Price Index average for North Hertfordshire is £422,616 in June 2026, up 7.8% year on year.

Schools

Published establishments

30 open schools are in scope, including 20 primary and 2 secondary schools. Knebworth Primary and Nursery School is the nearest published school at 258 m.

Counts describe active establishment records. They do not assess admissions, catchments or quality.

Recorded crime

Published police records

460 published events cover 12 months, averaging 38.333 events per published month. The largest recorded category is Violence and sexual offences with 192 events.

The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.