Area: 21.43 kmē 

Watford is a town and district in Hertfordshire, England and is situated 27 km (17 miles) northwest of central London and within the bounds of the M25 motorway. The borough lies just to the north of Greater London, but is not part of it.

The borough of Watford has 79,500 inhabitants. The parish of Watford Rural covers an area to the south of the borough of Watford (which is largely urbanised), in the Three Rivers District. The nearby areas of Bushey, Rickmansworth, Kings Langley, Abbots Langley, South Oxhey and Leavesden, located in Three Rivers and Hertsmere districts, form part of the Watford postal area.

The head offices of many national companies such as Camelot Group, operator of the UKs National Lottery; Iveco, manufacturers of commercial vehicles; and Haden Young, the building services division of Balfour Beatty are located in the town. The borough is also the UK base of many multi-nationals including Total Oil, Sanyo, TK Maxx, Costco, and Beko.

The site of a former Rolls Royce factory in the north of the town has been transformed into Leavesden Film Studios, with the remaining land used for housing and the Leavesden Park business units. Leavesden Parks tenents include BBC Vecta and BT

Watford was created as an urban district under the Local Government Act 1894, and became a municipal borough by grant of a charter in 1922