What parts of the US does the orca whale live?

Killer Whales generally live in the ocean, not the US as a landmass ( haha ) but large populations can be found off the Northwest Coast, the coasts of Oregon and Washington, as well as off the coasts of Alaska; On the East Coast they can be found infrequently in the entirety of the Gulf Stream, as well as of the Coasts of Maine, albeit not nearly as concentrated on the NW Coast.

There is also a small, unfrequent population in the Gulf of Mexico, whom feed on mostly tuna.

As a transient hunters, Killer Whales can also turn up anywhere there is an ocean, and even up some rivers, though this has happened only in Europe, as far as I know.

Killer Whales have been sighted of the coasts of North Carolina, New Jersey, Maryland, California, and elsewhere, to name a few.