Endemic to NSW from around the Budawang Range in the north down to near Mount Coricudgy where it is found scattered on tablelands growing in sandy soils as a part of dry sclerophyll forest communities. It is common in the western Blue Mountains from around Braidwood to Tumut.
https://keys.lucidcentral.org/keys/v3/plants_se_nsw/key/plants_se_nsw/Media/Html/entities/acacia_obtusata.htm
Acacia obtusata is listed in the following regions:
Canberra & Southern Tablelands | Southern Highlands | South Coast | Riverina Murray
Maps
Beowa National Park Biamanga National Park Bodalla State Forest Genoplesium plumosum target area Gnupa State Forest Morton National Park Mumbulla State Forest Murrah Flora Reserve Murrah State Forest Nullica State Forest South East Forest National Park Towamba State Forest Wadbilliga National Park Yambulla State Forest Yurammie State ForestPlaces
Bulee, NSW