I have female mayors in both my towns, but there's at least one male resident in either of them.
It's interesting to see how differently Cyrus, Mabel and Kapp'n treat boys, and the voice on the ABD while paying loans is also different x)
Other than that, it's the same thing.
The ABD voice changes? That's cool, you're very observant! I'll have to test it
Yes! When paying for a PWP the little voice that says the numbers is also a little deeper for male characters.