Llanwinio is a village[1] and community in Carmarthenshire, Wales, 2.7 miles (4.3 km) north of the hamlet of Gellywen.
The population recorded at the 2011 census was 448.[2] The 2011 census showed 46.0% of the population could speak Welsh, a fall from 62.3% in 2001.[3]
In 1844 Samuel Lewis'sA Topographical Dictionary of Wales described Llanwinio as being divided into two sections – an Eastern Division and a Western Division, with a population of 1035: with a population of 422 in the Eastern and 613 in the Western Division.[4]