 The resident population of Wales in 2011 increased by 5% since 2001 to 3,063,456, of whom 1,504,228 are men and 1,559,228 women, according to the 2011 census results.Wales accounted for 4.8% of the UK population in 2011.The Welsh language is an Indo-European language of the Celtic family; the most closely related languages are Cornish and Breton.