For the providers that offer OTA broadcasts, your location is determined in some way. It might be by your IP address, or it might be your user registration information on your account. I don't use Hulu, so I can't speak to exactly how they determine your location. But it's highly unlikely they'll let you select a metro area beyond your local area. There are legal reasons for it, most likely within their agreements with the networks and other broadcasters to only stream to users within specific geographic locations.
Dan
Roku Community Streaming Expert
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