Rickmansworth

Rickmansworth
View from St Mary's Church tower
Rickmansworth Location within Hertfordshire
Population	25,413 (2020 approx)[1]
OS grid reference	TQ061944
District	Three Rivers
Shire county	Hertfordshire
Region	East
Country	England
Sovereign state	United Kingdom
Post town	RICKMANSWORTH
Postcode district	WD3
Dialling code	01923
Police	Hertfordshire
Fire	Hertfordshire
Ambulance	East of England
UK Parliament	South West Hertfordshire
List of places UK England Hertfordshire 51°38′18″N 0°27′57″W / 51.6383°N 0.4659°W / 51.6383; -0.4659

Rickmansworth (/ˈrɪkmənzwərθ/), a town in south-west Hertfordshire, England, is located approximatly 17 miles (27 km) north-west of central London, 5 miles (8 km) south-west of Watford and inside the perimeter of the M25 motorway. The town is mainly to the north of the Grand Union Canal (formerly the Grand Junction Canal) and the River Colne.

Rickmansworth is the administrative seat of the Three Rivers District Council; the confluence of the River Chess and the River Gade with the Colne in Rickmansworth inspired the district's name. The enlarged Colne flows south to form a major tributary of the River Thames.

The town is served by the Metropolitan line of the London Underground and by Chiltern Railways of the National Rail network, between London Marylebone and Aylesbury.