Gloucestershire (/ˈɡlɒstərʃər/ GLOST-ər-shər, /-ʃɪər/ -sheer; abbreviated Glos.) is a ceremonial county in South West England. It is bordered by Herefordshire to the north-west, Worcestershire to the north, Warwickshire to the north-east, Oxfordshire to the east, Wiltshire to the south, Bristol and Somerset to the south-west, and the Welsh county of Monmouthshire to the west. The largest settlement is the city of Gloucester.
The county is predominantly rural, with an area of 3,150 square kilometres (1,220 sq mi), and a population of 975,712 in 2024. Gloucester is located in the north-centre of the county, and the spa town of Cheltenham is immediately to the east. Other towns include Tewkesbury in the north, Cirencester in the east, Stroud in the centre, and Yate in the south. The far south of the county, including Filton and Kingswood, is densely populated and forms part of the Bristol built-up area. For local government purposes Gloucestershire comprises a non-metropolitan county, with six districts, and the unitary authority area of South Gloucestershire. South Gloucestershire Council is a member of the West of England Combined Authority.