Thornbury, Gloucestershire

Thornbury
Market town
Thornbury
Location within Gloucestershire
Population14,496 (2021 census)
OS grid referenceST636902
Unitary authority
Ceremonial county
Region
CountryEngland
Sovereign stateUnited Kingdom
Post townBRISTOL
Postcode districtBS35
Dialling code01454
PoliceAvon and Somerset
FireAvon
AmbulanceSouth Western
UK Parliament

Thornbury is a market town and civil parish in the South Gloucestershire unitary authority area of England, about 12 miles (19 km) north of Bristol. It had a population of 12,063 at the 2011 census, rising to 14,496 in the 2021 census. Thornbury is a Britain in Bloom award-winning town, with its own competition: Thornbury in Bloom. The earliest documentary evidence of a village at "Thornbyrig" dates from the end of the 9th century. The Domesday Book of 1086 noted a manor of "Turneberie" belonging to William the Conqueror’s consort, Matilda of Flanders, with 104 residents.