Harrow
§ This page gives an overview of the Harrow local authority district, bringing together key facts, maps, and data to help you quickly understand the area. This is one of 361 LAD profiles on Baseview.
Overview ⁞ Harrow lies in northwest London and is known for its suburban character, good schools, and the prestigious Harrow School. It has a mix of shopping areas, residential neighbourhoods, and green spaces such as Harrow on the Hill.
What County is Harrow in?
Harrow is in Greater London. It is one of the 32 London boroughs and is administered by Harrow Council, which operates as a unitary authority responsible for local government services in the area. For modern administrative, geographic, and ceremonial purposes, Harrow is officially part of Greater London rather than a traditional English county.
Historically, Harrow was part of the county of Middlesex before the creation of Greater London in 1965. This historic association explains why older records and references may still link Harrow to Middlesex. However, since the reorganisation of London’s boundaries, Harrow has been in Greater London, and this remains the correct and current answer today.
Harrow Boundary Map
This map shows the official boundary of the Harrow local authority district, based on the latest geographic data published by the Office for National Statistics (ONS). It provides a clear view of the district’s extent and helps you understand how the area fits within the wider regional and national landscape.
Contains OS data © Crown copyright and database right 2025. Source: Office for National Statistics licensed under the Open Government Licence v3.0.
The administrative boundary of Harrow can also be viewed on OpenStreetMap: District Boundary of Harrow.
Key Facts about Harrow
What region is Harrow in? Harrow is in the Greater London, an administrative region and a ceremonial county in England.
Is Harrow a city? No, Harrow is not a city. (Note: the UK has 76 officially designated cities.)
Who governs Harrow? The local government for this district is: The London Borough of Harrow (London Borough).
▶ Official website of The London Borough of Harrow 🔗 harrow.gov.uk
Which police force covers Harrow? Policing in Harrow is provided by Metropolitan Police Service 🔗 met.police.uk, which serves 32 London Boroughs.
Harrow in International Geographies
In the International Territorial Levels (ITLs) hierarchy, Harrow is within an ITLs Level 3 area:
- (ITL 1) London
- (ITL 2) ⇒ Outer London - West and North West
- (ITL 3) ⇒⇒ Harrow and Hillingdon
The International Territorial Levels are used by OECD member countries for statistical purposes to classify administrative areas. We have this listable page for easy browsing of ITL names and codes: International Territorial Levels.
Constituencies in Harrow
Harrow is divided into 3 parliamentary constituencies, listed below in alphabetical order.
A constituency is a specific geographical area that elects one Member of Parliament (MP) to represent them in the House of Commons. The United Kingdom is divided into 650 parliamentary constituencies, 75 of them are in Greater London (covering 32 London boroughs). We have this list page for easy browsing of all UK parliamentary constituencies: List of Constituencies.
Wards in Harrow
Harrow is divided into 22 wards, listed below in alphabetical order.
- Belmont
- Canons
- Centenary
- Edgware
- Greenhill
- Harrow on the Hill
- Harrow Weald
- Hatch End
- Headstone
- Kenton East
- Kenton West
- Marlborough
- North Harrow
- Pinner
- Pinner South
- Rayners Lane
- Roxbourne
- Roxeth
- Stanmore
- Wealdstone North
- Wealdstone South
- West Harrow
In the UK, a ward is a subdivision of a local authority area, used mainly for electoral and statistical purposes. Defined by the ONS, wards represent the primary unit for local elections, each returning one or more councillors to the local council. Wards are also used as a key geography for presenting population and census data. We have this list page for easy browsing of all electoral wards: List of all Electoral Wards in the UK.
Parishes in Harrow
Harrow is entirely unparished—there are no civil parishes in this local authority district.
Parishes are the lowest tier of local government; where they don’t exist, those very local services and representation sit directly with the principal council. We have this list page for easy browsing of all parishes: List of Civil Parishes in England and Wales.
Post Towns in Harrow
Below is a list of post towns in Harrow, grouped by postcode area:
- HA ▸ Harrow (HA1 / HA2 / HA3) ⁞ Pinner (HA5) ⁞ Stanmore (HA7)
The UK postal hierarchy begins with broad postcode areas (such as “CB” or “M”), which are divided into smaller postcode districts (such as “CB8” or “M1”) to support accurate mail routing. Each postal address is anchored by a designated post town, the official locality name used in the UK postcode system, which operates independently from Local Authority Districts —the administrative boundaries used for council tax and local government services. Because they serve different purposes, a property’s postal address and its local authority district do not always align exactly.
Built-up Areas in Harrow
Harrow covers 8 built-up areas, listed below in alphabetical order.
- Barnet *
- Brent *
- Bushey *
- Ealing *
- Elstree *
- Harrow *
- Hillingdon *
- Watford (Watford) *
In the UK, a Built-up Area (BUA) is a continuous urban area of at least 20 hectares (0.2 km²), defined by the ONS as land where buildings are generally no more than 200 metres apart, such as towns, cities, or large villages. (Note: A BUA name marked with an asterisk (*) indicates that the area is situated partly in the district of Harrow.)
We have this list page for easy browsing of all built-up areas: List of all Built-up Areas in GB.
Railway Stations in Harrow
Harrow is served by a number of National Rail stations, providing rail connections to nearby towns, cities, and destinations across Great Britain. The railway stations listed below are located within the Harrow Local Authority District and are grouped by train operating company for clarity.
- Chiltern Railways ▸ Sudbury Hill Harrow (HA1 3RJ)
- London Overground ▸ Hatch End (HA5 4HU) ⁞ Headstone Lane (HA2 6NB)
- London Underground ▸ Harrow and Wealdstone (HA3 5BP) ⁞ Harrow-On-The-Hill (HA1 1BB)
This is a district-level view only. For a complete list of all National Rail stations across Great Britain, see the UK National Rail Stations Directory.
Harrow compared with other districts in the UK
This section shows how Harrow compares with other local authority districts in the UK, using a variety of measures and rankings.
Harrow has 22 electoral wards.
Harrow has a population of 270,724 (2024 mid-year estimate by ONS)
Population and Migration Trends in Harrow
This chart shows the population trend for Harrow from 2015 to 2024. It provides a quick overview of whether the local authority is growing, stable, or declining over time, and helps set context for the migration patterns shown below.
Population change is influenced by natural change (births minus deaths) and migration. The net migration chart below focuses on migration, separating internal migration (moves within the UK) from international migration (moves to and from abroad). Positive values indicate net inflows, while negative values indicate net outflows. The rate labels (per 1,000 residents) help compare migration intensity across years, even when the population size changes.
More local statistics and data for Harrow can be found on the ONS statistics for Harrow.