Between 2001 and 2021, the centre of population for Blue Mountains (C) moves 0.3km west, with population increasing from 76,600 in 2001 to 78,400 in 2021. Centres of population based on 30 June populations and geographic centroids of MBs within the SA2 of Blue Mountains (C). Blue = estimated, red = projected. Data: ABS/AIHW. Created by @AndyHowe_statto. AREA LIST