Tasmania is short on young adults and has a much higher proportion of older adults than does the nation as a whole.
People aged 20-44 made up 30 per cent of the Tasmanian population in 2019, the Australian Bureau of Statistics found.
The national proportion was 35 per cent.
“This in part reflects young adults pursuing education and employment opportunities interstate,” the ABS said on Friday.
Forty-seven per cent of Tasmanians were aged 45 and over, compared to 40 per cent nationally.
The ABS said that was partly due to a trend of 45 and overs moving to Tasmania.
It is not yet clear if or when “normal service” on interstate migration will be resumed after coronavirus movement restrictions ease.
Greater Hobart had a much bigger proportion of adults aged 20-49 than did the rest of Tasmania (39.1 per cent to 33.9 per cent).
ABS director of demography Lauren Ford said there was a higher concentration of younger adults in the capital cities in all states.
The ABS said the median (mid-point) age in Greater Hobart was 39.6, rising to 44.5 for the rest of the state.
The “oldest” areas were all on the East Coast.
They were Forestier-Tasman (56.6), Triabunna-Bicheno (56.4) and St Helens-Scamander (55.9).
Launceston suburb Mowbray (31.3) had the youngest median age.
The ABS noted it was close to UTAS and other education facilities.
Rokeby (32.5) and Bridgewater-Gagebrook (32.8) on Hobart’s Eastern Shore were next youngest.
Areas with significant shortages of females compared to males were Risdon Vale (which hosts Tasmania’s main prison), Flinders and Cape Barren islands, the Central Highlands and Waratah.
Areas with significantly more females than males were Launceston suburbs Prospect Vale-Blackstone, Newstead and Norwood and Devonport suburbs East Devonport and Miandetta-Don.