Between 1991 and 2021, the centre of population for Ballarat moves 2.1km south, with population increasing from 129,000 in 1991 to 173,000 in 2021. Centres of population based on 30 June populations and geographic centroids of SA1s within the SA4 of Ballarat. Blue = estimated, red = projected. Data: ABS/AIHW. Created by @AndyHowe_statto. AREA LIST