Kilmersdon is a village and civil parish on the north eastern slopes of the Mendip Hills in Somerset between the towns of Radstock and Frome.

[3] Kilmersdon is said to be the "home" of the Jack and Jill nursery rhyme, the fabled hill being recently[when?]

Immediately adjacent to the newly restored well is Kilmersdon Primary School, which was established (though not in the current building) in 1707.

The family's estate covers some of the nearby villages including Kilmersdon, and many of the cottages in this estate are owned and run by a charitable housing association set up by Lord Hylton to continue to provide affordable housing for local residents.

At its foot the incline junctioned in a triangular configuration with the Radstock-to-Frome section of the GWR's Bristol and North Somerset Railway.

[9] Nationalised after World War II as part of the National Coal Board, the mine became the last colliery working the Somerset Coalfield.

[11] The nearby Kilmersdon Road Quarry is a 0.43 hectare geological Site of Special Scientific Interest.

The parish council's role also includes initiating projects for the maintenance and repair of parish facilities, as well as consulting with the district council on the maintenance, repair, and improvement of highways, drainage, footpaths, public transport, and street cleaning.

Conservation matters (including trees and listed buildings) and environmental issues are also the responsibility of the council.

It is also part of the Frome and East Somerset parliamentary constituency represented in the House of Commons of the Parliament of the United Kingdom.

Haydon, where the Kilmersdon pit-head was, is in a different local authority area, Bath and North East Somerset.