High Quality Content by WIKIPEDIA articles! Truro is a city in Cornwall, England, United Kingdom, and is the centre for administration, leisure and retail in Cornwall, with a population of 20,920. It is the only city in the county, and the most southerly city in Great Britain. People from Truro are known as Truronians. Truro initially grew as an important centre of trade from its port, and then as a stannary town for the mining industry. The city is well-known for its cathedral, cobbled streets, open spaces and Georgian architecture, and places of interest include the Royal Cornwall Museum, the Hall for Cornwall, Cornwall's Courts of Justice and Cornwall Council.