Llanelli (“St Elli’s Parish”; Welsh: [ɬaˈnɛɬi] (listen)) is the largest town in Carmarthenshire and the preserved county of Dyfed, Wales. Located on the Loughor estuary 10.5 miles (16.9 km) north-west of Swansea and 12 miles (19 km) south-east of the county town, Carmarthen, it was a market town that industrialised in the early 19th century as the global centre for tinplate production. Several communities nearby may be included colloquially in Llanelli. The community of Llanelli had a census population of 25,168 in 2011, estimated in 2019 at 26,225. The local authority had been Llanelli Borough Council while the preserved county of Dyfed existed, but it is now under Carmarthenshire County Council.