Mae WIMD yn mesur wyth o wahanol fathau o amddifadedd - incwm, gwaith, iechyd, addysg, mynediad at wasanaethau, tai, yr amgylchedd gorfforol a diogelwch cymunedol - gyda'r mynegai ar gyfer 2019 yn dangos pocedi o amddifadedd uchel cymharol yn ninasoedd De Cymru a'r cymoedd, ac o fewn rhai o drefi arfordirol a ffiniol Gogledd Cymru.
WIMD measures eight separate types of deprivation – income, employment, health, education, access to services, housing, physical environment and community safety – with the index for 2019 showing pockets of high relative deprivation in South Wales cities and valleys, and in some North Wales coastal and border towns.