I purchased this book at the Deep Valley Book Festival just last week. I came home with a stack of books and this was the first series I started. I loved the found family trope and I was very intrigued by the concept of using a circus as a subversive tool of the resistance against the intolerant.
The magic system is very wide ranging. Children can be born as Elementals (Earth, Wind, Fire, Water, Forgers or Herbalists, shapeshifters and those gifted with speaking to and animals, and Elven. The current government is against all magic however and as soon as a child displays gifts they are whisked away to the Capital, never to be seen again.
There are mortals who assist in hiding the gifted children and protecting those who have lost their parents to the magic haters. Thus, the circus. When the circus comes to town, the performers - magicked and mortal - put on a show while the "crew" seek out their contacts in the towns to take away the gifted children.
The story follows four aerialists very closely, Rae Freeborn, Zeke - her best friend (both found as very young children), Damien and Luc. We also get in the head of Duncan, the Ringmaster, and one of the trick horseriders, Tyee. So yeah, there is a fair amount of head hopping going on.
I had originally pegged this as a solid middle grade/young adult contemporary dystopian fantasy because the world-building was info-heavy and the actions and idioms of the characters are very American and very contemporary. But it is not urban fantasy - more alternate world. About a third of the way through, the story becomes much more adult in language, romance leading to sex, and definitely not middle grade. So maybe consider it, YA/NA? Or don't peg it at all and just enjoy the beginning of a unique series.
For fans of Kenneth A. Baldwin's Gaslight Trilogy (circus themed), Jami Fairleigh's The Elemental Artist series, Tamora Pearce's Circle of Magic series.