“Urban” includes settlements with a population of 10,000 or more and small towns and their fringes, where the wider surrounding area is less sparsely populated. “
Mae “trefol” yn cynnwys aneddiadau gyda phoblogaeth o 10,000 neu fwy a threfi bach a'u cyrion, lle mae'r ardal gyfagos ehangach yn fwy prin ei phoblogaeth.