Between 1991 and 2021, the centre of population for Perth - North West moves 4.5km north-north-west, with population increasing from 331,000 in 1991 to 597,000 in 2021. Centres of population based on 30 June populations and geographic centroids of SA1s within the SA4 of Perth - North West. Blue = estimated, red = projected. Data: ABS/AIHW. Created by @AndyHowe_statto. AREA LIST