Tasmania has 38 sheep per square kilometer and is only surpassed by Victoria with 60 sheep km2. WA has 4 sheep per km2, QLD 1.44, SA 10, NSW 3.
In population terms, Tasmania has 4.5 sheep per person, whereas Victoria has 1.9 sheep per person. NSW 0.28, SA 5.2, WA 3.3, QLD 0.4
[1] https://www.ga.gov.au/scientific-topics/national-location-in... [2] https://www.abs.gov.au/statistics/people/population/national... [3] https://www.wool.com/market-intelligence/sheep-numbers-by-st...
* Population numbers are one head per person, so actual numbers may vary for Tasmania ;-)