The numbers of households are projected to increase by 4.8% (almost 730) in the Brecon Beacons, 5.3% (550) in Pembrokeshire Coast and by 0.3% (40) in Snowdonia.
Amcanestynnir bydd nifer yr aelwydydd yn cynyddu 4.8% (bron 730) ym Mannau Brycheiniog, 5.3% (550) yn Arfordir Sir Benfro a 0.3% (40) yn Eryri.