Famous people from Clynnog include Morus Clynnog and Saint John Jones, both prominent Welsh Catholics in the 16th century. Clynnog is covered by a Neighbourhood Policing Team based in the nearby village of Penygroes. Clynog Golf Club (now defunct) appeared only briefly after World War I. It had disappeared by the mid-1920s. The Clynnog electoral ward elects one councillor to sit on Gwynedd Council. Clynnog's population was 997, according to the 2011 census; this was a 15.93% increase since the 860 people noted in 2001. The 2011 census showed 73.2% of the population could speak Welsh, a rise from 67.2% in 2001.