At a local authority level, Cardiff (3.9%) and Newport (3.4%) had the highest proportion of households with fewer bedrooms than required (with average occupancy ratings).
Ar lefel awdurdod lleol, Caerdydd (3.9%) a Chasnewydd (3.4%) oedd â’r gyfran uchaf o gartrefi â llai o ystafelloedd gwely na’r gofyn (cyfraddau cyfanheddu cyfartalog).