I first heard the name from a little girl... and now today I have a daughter named Azariah. My family loves it! We get mixed reviews from strangers but mostly love. Her nickname is Azzi.
I heard this was a female name. My friend had her confirmation when she was thirteen and used Azariah as her 'new' middle name in the ceremony. *is confused*
In many other languages, names are largely gender neutral. While the -yah element is far more commonly used in Hebrew men's names, it's not exclusively masculine. Although I've noticed that it tends to be found as a prefix on "feminine" names rather than as a suffix (Jo- instead of -iah). That said, Azariah can still easily be a girl's name.