For comparison, in Australia in 2021, there were 1,068,268 single parent families (representing 15.9% of families), with 19.6% of these parents being male.

At the previous census in 2016, with was 959,544, 15.8% of families, and 18.2% of those parents being male.

So single fathers are on the rise here. By comparison, the US has a higher proportion of single-parent families and a greater share of the parents are fathers.

Having written the above, I remembered that a large number of Aussie kids have custody shared between their two parents. The above figures relate to where they were on census night. Lots of those kids would be with their mum most of the time and their dad on some weekends.