Harrow on the Hill was an urban district

Urban district

In the England, Wales and Ireland, an urban district was a type of local government district that covered an urbanised area. Urban districts had an elected Urban District Council , which shared local government responsibilities with a county council....

 in Middlesex

Middlesex

Middlesex is one of the historic counties of England and the second smallest by area. The low-lying county contained the wealthy and politically independent City of London on its southern boundary and was dominated by it from a very early time...

, England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 from 1894 to 1934.

It was created under the Local Government Act 1894

Local Government Act 1894

The Local Government Act 1894 was an Act of the Parliament of the United Kingdom that reformed local government in England and Wales outside the County of London. The Act followed the reforms carried out at county level under the Local Government Act 1888...

. This Act split the historic parish of Harrow on the Hill several ways, with parts becoming the new parishes of Harrow Weald

Harrow Weald

Harrow Weald is an area in north-west London, England. It includes a suburban development and forms part of the London Borough of Harrow.-Locale, geography and history:...

, Wealdstone

Wealdstone

Wealdstone is a largely working-class and recent immigrant district in the London Borough of Harrow, north west London.-History and name:The eponymous Weald Stone is a sarsen stone, formerly marking the boundary between the parish of Harrow and Harrow Weald...

 and Wembley

Wembley

Wembley is an area of northwest London, England, and part of the London Borough of Brent. It is home to the famous Wembley Stadium and Wembley Arena...

. The remaining part of the parish formed Harrow on the Hill urban district.

It took in 101 acre (0.40873286 km²) from the disbanded parish of Northolt

Northolt

Northolt is a town in the London Borough of Ealing, England. The town has London Underground and Network Rail stations and is on the A40 road...

 in 1928.

In 1934 the district was abolished by a County Review Order

Local Government Act 1929

The Local Government Act 1929 was an Act of the Parliament of the United Kingdom that made changes to the Poor Law and local government in England and Wales....

, becoming part of the new Harrow Urban District; a precursor of the London Borough of Harrow

London Borough of Harrow

The London Borough of Harrow is a London borough of north-west London. It borders Hertfordshire to the north and other London boroughs: Hillingdon to the west, Ealing to the south, Brent to the south-east and Barnet to the east.-History:...

.