The City We Became is a 2020 urban fantasy novel by N. K. Jemisin. Taking place in New York City (a setting in which we are heavily invested), the City itself is in peril in a world where great cities become sentient through human avatars. After the avatar of New York falls into a supernatural coma and vanishes, a group of five new avatars representing the five boroughs come together to fight their common Enemy.
It's the first book in her ongoing The Great Cities series, but it is self-contained and well worth reading alone. We've discussed her work before in the book club with The Fifth Season (also 1000% worth reading)!