The name Bronx is a boy's name . Bronx and is often added to lists like American Names for Boys and discussed in our forums with posts like "Build a sibling set together!".
From the experts:
Rockers Ashlee Simpson and Pete Wentz put a new baby name on the map when they chose this downscale New York borough name for their son. The Bronx, the place, was named for early Dutch settler Jonas Bronck. Might Bronx become the next Brooklyn? We'd be surprised if it did.