As a child, Ramsey attended Ysgol Gyfun Cwm Rhymni (Rhymney Valley Comprehensive School) in Caerphilly County Borough. Ramsey's first introduction to football was at the age of nine, when he attended an Urdd training session at Caerphilly. Before turning to football, he was a keen rugby player and athlete. As a schoolboy he played as a winger for Caerphilly R. F. C. s youth development programme, where he was approached by scouts from rugby league side St. Helens after playing in a youth match against them but had already been signed by Cardiff City's youth academy. Ramsey was Welsh Schools' Athletic Association pentathlon champion in 2005 and was ranked 4th in Great Britain in the under 17 age group in 2006. He lived with his parents, Marlene and Kevin, and his brother, Josh, until moving to London where he was housemates with former Cardiff City teammate, Chris Gunter, who was then playing for Tottenham Hotspur. Ramsey is bilingual, speaking both Welsh and English.