Ceredigion sources of income. Ceredigion's population at the 2011 UK census was 75,900. Its largest town, Aberystwyth, is one of its two administrative centres, the other being Aberaeron. Aberystwyth houses Aberystwyth University, Bronglais Hospital and the National Library of Wales. Lampeter is home to part of the University of Wales Trinity Saint David. Ceredigion has been inhabited since prehistoric times. A total of 170 hill forts and enclosures have been identified across the county and there are many standing stones dating back to the Bronze Age. Around the time of the Roman invasion of Britain, the area was between the realms
History of the Welsh language such as Cardiff with an increase from 6.6% in 1991 to 10.9% in 2001, and Rhondda Cynon Taf with an increase from 9% in 1991 to 12.3% in 2001. However, the number of Welsh speakers declined in Gwynedd from 72.1% in 1991 to 68.7%, and in Ceredigion from 59.1% in 1991 to 51.8%. Ceredigion in particular experienced the greatest fluctuation with a 19.5% influx of new residents since 1991. The decline in Welsh speakers in Gwynedd and Ynys Môn may be attributable to non-Welsh-speaking people moving to North Wales, driving up property prices to levels that local Welsh speakers cannot