Find HA1 3SN in Harrow and explore the information recorded for it. The interactive map shows the postcode’s position and an approximate address-derived outline, with exact-postcode facts and wider neighbourhood statistics clearly identified below. Census 2021 records 117 residents and 33 households at the exact postcode.
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Create a Custom MapCore details from the ONS Postcode Directory. Geography codes identify the official areas containing this postcode.
| Postcode | HA1 3SN |
| Postcode without spaces | HA13SN |
| Status | Active postcode |
| User type | Small user postcode |
| Introduced | January 1983 |
| Directory version | 2026-06 |
| Latitude | 51.5638100 |
| Longitude | -0.3365960 |
| British National Grid | 515,395 E, 186,303 N |
| Country | England |
| Region | London |
| Local authority | Harrow |
| Output Area (2021) | E00010714 |
| LSOA (2021) | E01002134 |
| MSOA (2021) | E02000461 |
| Electoral ward | E05013547 |
| Westminster constituency | E14001271 |
The postcode is assigned to these official political geographies. Names and election results will be added when the ElectionMaps datasets are connected.
These Census figures are matched directly to the full postcode, rather than inferred from a wider neighbourhood.
| Residents | 117 |
| Households | 33 |
| Female residents | 58 |
| Male residents | 59 |
| Residents per household | 3.5 |
A detailed vector map covering a 500 metre radius around the postcode.
Deprivation is published for the postcode's containing Lower Layer Super Output Area, a neighbourhood geography covering more than one postcode.
Land Registry Price Paid Data transactions matched to this exact full postcode.
| Sale date | Address | Property type | Tenure | Price |
|---|---|---|---|---|
| 15 Sep 2025 | 27, HARROW FIELDS GARDENS, HARROW | Terraced | Freehold | £720,000 |
| 29 Feb 2024 | 17, HARROW FIELDS GARDENS, HARROW | Terraced | Freehold | £660,000 |
| 10 Jun 2022 | 6, HARROW FIELDS GARDENS, HARROW | Terraced | Freehold | £760,000 |
| 25 Jun 2021 | 13, HARROW FIELDS GARDENS, HARROW | Terraced | Freehold | £630,000 |
| 19 Jun 2020 | 18, HARROW FIELDS GARDENS, HARROW | Terraced | Freehold | £605,000 |
| 23 Mar 2020 | 23, HARROW FIELDS GARDENS, HARROW | Semi-detached | Freehold | £835,000 |
Open schools and active GP practices in the HA1 postcode district, ordered by straight-line distance where coordinates are available.
B
SUDBURY HILL, HARROW, HA1 3RX
Academy converter
Sudbury Hill, Harrow, Middlesex, HA1 3SB
Ages 2–11 · 404 pupils of 420 capacity
5.4% eligible for free school meals
B
LANFRANC COURT, GREENFORD ROAD, HARROW, HA1 3QE
Further education
Mount Park Avenue, Harrow-on-the-Hill, Middlesex, HA1 3HX
Ages 16–18
Other independent school
South Hill Avenue, Harrow, Middlesex, HA1 3NU
Ages 4–13 · 467 pupils of 500 capacity
Other independent school
5 High Street, Harrow-on-the-Hill, HA1 3HP
Ages 12–19 · 833 pupils of 837 capacity
Voluntary aided school
Roxborough Park, Harrow, HA1 3BE
Ages 4–11 · 408 pupils of 420 capacity
7.6% eligible for free school meals
B
NORTHWICK PARK HOSPITAL, WATFORD ROAD, HARROW, HA1 3UJ
Other independent school
13 Kenton Road, Harrow, Middlesex, HA1 2BW
Ages 11–17 · 60 pupils of 60 capacity
B
COLBECK ROAD, HARROW, HA1 4BS
Free schools alternative provision
73-77 Lowlands Road, Harrow, HA1 3AW
Ages 11–16 · 0 pupils of 100 capacity
0.0% eligible for free school meals
Academy converter
Gayton Road, Harrow, HA1 2JG
Ages 11–18 · 982 pupils of 1,100 capacity
33.9% eligible for free school meals
Companies House records whose registered-office address uses this exact postcode.
Private Limited Company
Incorporated 4 June 2026
45200 - Maintenance and repair of motor vehicles
Private Limited Company
Incorporated 20 February 2026
43390 - Other building completion and finishing
Private Limited Company
Incorporated 7 August 2025
46900 - Non-specialised wholesale trade
Private Limited Company
Incorporated 8 August 2024
70229 - Management consultancy activities other than financial management
Private Limited Company
Incorporated 18 April 2024
64209 - Activities of other holding companies n.e.c.
Private Limited Company
Incorporated 28 November 2023
73110 - Advertising agencies
Private Limited Company
Incorporated 6 March 2023
47910 - Retail sale via mail order houses or via Internet
Private Limited Company
Incorporated 18 April 2022
86900 - Other human health activities
Private Limited Company
Incorporated 9 August 2021
97000 - Activities of households as employers of domestic personnel
Private Limited Company
Incorporated 12 March 2019
41201 - Construction of commercial buildings
Private Limited Company
Incorporated 7 February 2017
47890 - Retail sale via stalls and markets of other goods
Private Limited Company
Incorporated 22 October 2012
70229 - Management consultancy activities other than financial management
Police.uk street-level incidents recorded across the postcode's containing LSOA in May 2026.
Harrow 029B includes HA1 3SN and other nearby postcodes.
| Crime type | Incidents |
|---|---|
| Violence and sexual offences | 12 |
| Anti-social behaviour | 2 |
| Other theft | 1 |
Answers use the geographic scope stated with each dataset above.
HA1 3SN is in Harrow, England.
The Census 2021 postcode-level dataset records 117 residents at HA1 3SN. This is an exact postcode count.
The deprivation figures describe the containing Lower Layer Super Output Area, not only the individual postcode.
Yes. The sold-price records shown on this page are Land Registry transactions matched to the full HA1 3SN postcode.
Vector Maps supplies editable UK postcode area, district and sector map files. For a vector or printed map focused on the full HA1 3SN postcode and its approximate address-derived outline, request a custom map.
Explore other full postcodes in the same postcode sector.