Help getting started with Roku devices, including setup, connecting your device to your TV, linking a Roku device to your account at my.roku.com/link, adding channels, subscribing to services, and more.
Are you referring to a Roku TV, or are you using a Roku channel of some kind that streams the TV stations? If it's a channel, you most likely have to change that with the channel provider. If you are receiving over the air TV on a regular TV, well you'll only get what your antenna can pick up, regardless of where you live.
Please advise what Roku device you're using. Model number, not name.
Dan Roku Stick (3600), Ultra (4640), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.