Ceredigion was the only local authority to show a decrease in the estimated number of households between mid-2016 and mid-2017, down 90 (0.3%).
Ceredigion oedd yr unig awdurdod lleol i weld gostyngiad yn nifer yr aelwydydd rhwng canol 2016 a chanol 2017, i lawr 90 (0.3%).