The hillfort, which is at the top of an isolated outcrop of Oolitic Limestone,[2] close to the A39 road is on the route of the Wansdyke.

The parish council's role also includes initiating projects for the maintenance and repair of parish facilities, such as the village hall or community centre, playing fields and playgrounds, as well as consulting with the district council on the maintenance, repair, and improvement of highways, drainage, footpaths, public transport, and street cleaning.

Marksbury is part of the Farmborough Ward, which is represented by one councillor on the unitary authority of Bath and North East Somerset which was created in 1996, as established by the Local Government Act 1992.

[8] The parish is represented in the House of Commons of the Parliament of the United Kingdom as part of Frome and East Somerset.

According to the 2001 Census, the Farmborough Ward (which includes Compton Dando, Woollard, Hunstrete, Chewton Keynsham, Saltford and Stanton Prior) had 1,111 residents, living in 428 households, with an average age of 44.5 years.

Of these 71% of residents describing their health as 'good', 21% of 16- to 74-year-olds had no qualifications; and the area had an unemployment rate of 1.0% of all economically active people aged 16–74.

The nave has two 2-light windows under hoodmoulds flanking a blocked, moulded round-headed door under a plaque dated 1627.

The parish is part of the benefice of Farmborough with Marksbury and Stanton Prior, Clutton with Cameley, and within the archdeaconry of Bath.