DL1 3TT

Harrowgate Hill · Darlington · England

Updated September 2026

Compare this postcode

Location overview

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Post town
Darlington
Local authority
Darlington
Constituency
Darlington
Postcode district
DL1
Postcode sector
DL1 3

Nearby postcodes

Nearby postcode distances
Postcode Distance
DL1 3TS 57 m
DL1 3TU 64 m
DL1 3TP 102 m
DL1 3TR 118 m
DL1 3TX 119 m
Complete postcode fields and official codes
Postcode
DL1 3TT
Status
Current
Introduced
1 December 1995
Terminated
Not published
Postcode area
DL
Postcode district
DL1
Postcode sector
DL1 3
Latitude
54.548647
Longitude
-1.534808
British National Grid easting
430,190
British National Grid northing
517,142

Statistical and administrative geographies

Country
England · E92000001
Region
North East · E12000001
Local authority district
Darlington · E06000005
Parish or community
E43000249
Westminster constituency
Darlington · E14001190
Output area
E00062183
Lower layer super output area
Darlington 003C · E01012330
Middle layer super output area
Darlington 003 · E02002561

Postcode source versions

Explore DL1

43 recorded sales at this postcode
Address Date Price
19, Helmsdale Close, Darlington, DL1 3TT 20 November 2020 £177,200
17, Helmsdale Close, Darlington, DL1 3TT 18 October 2019 £181,000
16, Helmsdale Close, Darlington, DL1 3TT 4 May 2018 £176,950

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
38
Primary
24
Secondary
6
  1. St Bede's Catholic Primary School

    Academy converter

    285 m
  2. Harrowgate Hill Primary School

    Community school

    944 m
  3. Beaumont Hill Academy

    Academy special converter

    1.0 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
1,994
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 718
  • Anti social behaviour 380
  • Criminal damage and arson 214
  • Public order 140
  • Shoplifting 107

Census 2021

Population and age profile

Postcode residents
50

27 female, 23 male

Postcode households
19
Residents per household
2.6
DL1 3 residents
8,807

Age bands in DL1 3

Wider postcode sector
Age 0 to 14
15.8%

1,340 residents

Age 15 to 24
10.2%

863 residents

Age 25 to 44
22.9%

1,945 residents

Age 45 to 64
28.9%

2,453 residents

Age 65 and over
22.2%

1,883 residents

This postcode contained 0.6% of the sector's usual residents on Census Day. The age profile describes the wider DL1 3 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

9

within 5 km

  • WHINFIELD MEDICAL PRACTICE

    WHINBUSH WAY, DARLINGTON, DL1 3RT

    ODS code A83005

    687 m

  • DENMARK STREET SURGERY

    DENMARK STREET, DARLINGTON, DL3 0PD

    ODS code A83047

    1.6 km

  • ORCHARD COURT SURGERY

    ORCHARD COURT, ORCHARD ROAD, DARLINGTON, DL3 6HZ

    ODS code A83006

    2.7 km

  • BLACKETTS MEDICAL PRACTICE

    63-65 BONDGATE, DARLINGTON, DL3 7JR

    ODS code A83034

    2.9 km

  • PARKGATE SURGERY

    PARK PLACE, DARLINGTON, DL1 5LW

    ODS code A83641

    3.0 km

  • MOORLANDS SURGERY

    139A WILLOW ROAD, DARLINGTON, DL3 9JP

    ODS code A83010

    3.2 km

  • CLIFTON COURT MEDICAL PRACTICE

    VICTORIA ROAD, DARLINGTON, DL1 5JN

    ODS code A83040

    3.2 km

  • NEASHAM ROAD SURGERY

    186 NEASHAM ROAD, DARLINGTON, DL1 4YL

    ODS code A83013

    3.5 km

  • CARMEL MEDICAL PRACTICE

    NUNNERY LANE, DARLINGTON, DL3 8SQ

    ODS code A83031

    3.7 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

  • Monarch Green

    BCT · Harrowgate Hill

    0.1 miles
  • Kingsway

    BCT · Harrowgate Hill

    0.1 miles
  • Monarch Green

    BCT · Harrowgate Hill

    0.2 miles
  • Locomotive Street

    BCT · Springfield

    0.2 miles
  • The Springfield

    BCT · Springfield

    0.2 miles

Relative deprivation

English Indices of Deprivation 2025 for Darlington 003C, 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

30,857 of 33,755

Income
9 of 10
Employment
9 of 10
Education and skills
8 of 10
Health and disability
6 of 10
Crime
9 of 10
Housing and services
10 of 10
Living environment
9 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
5
Medium risk addresses
0
Low risk addresses
1
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

Schools

38 open schools are in scope, including 24 primary and 6 secondary schools. St Bede's Catholic Primary School is the nearest published school at 285 m.

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

Recorded crime

1,994 published events cover 12 months, averaging 166.167 events per published month. The largest recorded category is Violence and sexual offences with 718 events.

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