Pembrokeshire (Welsh: Sir Benfro) is the most westerly county in Wales and the seventh-largest by area, at around 560 km2 (216 sq mi). It borders Carmarthenshire to the east, Ceredigion to the north-east, and the sea to the west and south-west. Historically, Pembrokeshire was one of the most Welsh-speaking counties in Wales and has long been associated with the Welsh language. As per the 2011 census, there were 37,163 households in Pembrokeshire, 6.1% more than in 2001 (35,412). The average household size was 2.58 people. 3 out of 10 (32%) were single-person households and 1 out of 10 (11%) were lone parent households; 7 out of 10 (71%) were couples without children; 4 out of 10 (39%) were couples with dependent children. This compares to 34% for Wales as a whole.