Subspecies oldfieldii is a common widespread eremophila which grows in clay, loam or calcareous sand between Wongan Hills and Shark Bay in the Avon Wheatbelt, Carnarvon, Coolgardie, Geraldton Sandplains, Murchison and Yalgoo biogeographic regions.
Subspecies oldfieldii is a common, widespread Eremophila species that grows in various soil types, including clay, loam, or sandy ground, across the Wongan Hills to Shark Bay regions within the Avon Wheatbelt, Carnarvon, Coolgardie, Geraldton Sandplains, Murchison, and Yalgoo biogeographic areas.