Census 2011: Number of Welsh speakers falls over last decade
11 December 2012 Last updated at 19:08 GMT
The number of people who speak Welsh has fallen in the last decade, according to the 2011 census.
Figures also reveal Welsh is now a minority language in Carmarthenshire and Ceredigion.
It has been thought that migration trends and education might lead to an increase in speakers in less traditional Welsh-speaking areas.
Only two areas, Monmouthshire and Cardiff, saw a percentage increase.
Betsan Powys reports.