SG4 8DT

Knebworth · North Hertfordshire · England

Updated September 2026

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Location overview

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Local authority
North Hertfordshire
Constituency
Stevenage
Postcode district
SG4
Postcode sector
SG4 8

Nearby postcodes

Nearby postcode distances
Postcode Distance
SG4 8SX 108 m
SG4 8TB 171 m
SG4 8WT 578 m
SG4 8TH 601 m
SG4 8TQ 694 m
Complete postcode fields and official codes
Postcode
SG4 8DT
Status
Terminated
Introduced
1 August 1993
Terminated
1 July 1995
Postcode area
SG
Postcode district
SG4
Postcode sector
SG4 8
Latitude
51.870822
Longitude
-0.240969
British National Grid easting
521,200
British National Grid northing
220,600

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

Explore SG4

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
19
Primary
14
Secondary
0
  1. East Hall School

    Other independent special school

    1.6 km
  2. Codicote Church of England Primary School

    Voluntary controlled school

    2.5 km
  3. St Paul's Walden Primary School

    Community school

    3.2 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
9
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Burglary 2
  • Shoplifting 2
  • Anti social behaviour 2
  • Violence and sexual offences 2
  • Criminal damage and arson 1

Census 2021

Population and age profile

Postcode residents
Not supplied
Postcode households
Not supplied
Residents per household
Not available
SG4 8 residents
6,657

Age bands in SG4 8

Wider postcode sector
Age 0 to 14
17.2%

1,179 residents

Age 15 to 24
9%

614 residents

Age 25 to 44
20.8%

1,424 residents

Age 45 to 64
29.9%

2,047 residents

Age 65 and over
23.2%

1,589 residents

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.

GP practices

5

within 5 km straight-line

  • WHITWELL SURGERY

    60 HIGH STREET, WHITWELL, HITCHIN, SG4 8AG

    ODS code E82626

    2.7 km

  • KNEBWORTH & MARYMEAD PRACTICE

    7 ST MARTINS ROAD, KNEBWORTH, SG3 6ER

    ODS code E82035

    4.2 km

  • KING GEORGE & MANOR HOUSE SURGERIES

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

    ODS code E82086

    4.7 km

  • BRIDGE COTTAGE SURGERY

    41 HIGH STREET, WELWYN, AL6 9EF

    ODS code E82019

    4.9 km

  • THE SYMONDS GREEN HEALTH CENTRE

    FILEY CLOSE, STEVENAGE, SG1 2JW

    ODS code E82111

    4.9 km

Nearby transport

  • Drivers End Lane

    BCT · Codicote

    0.6 miles
  • Drivers End Lane

    BCT · Codicote

    0.6 miles
  • The Green

    BCT · Nup End

    0.9 miles
  • The Green

    BCT · Nup End

    0.9 miles
  • Village Street

    BCT · Langley

    1.1 miles

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.

Evidence in context

Schools

19 open schools are in scope, including 14 primary and 0 secondary schools. East Hall School is the nearest published school at 1.0 miles.

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

Recorded crime

9 published events cover 12 months, averaging 0.75 events per published month. The largest recorded category is Burglary with 2 events.

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