Yes. Using a VPN is legal across the United States, and a great many people do. The more useful question is why so many of them started.

In 2017 Congress repealed the rules that would have required internet providers to ask permission before selling their subscribers' browsing histories. The rules never took effect, and no federal privacy law has replaced them since. In practice your provider can see every domain you open, and what it does with that record is largely its own business. Some states have written their own privacy laws; most have not.

That is the backdrop to the two things Americans actually notice:
  • Sport is sold by region. League services and regional sports networks black out the games closest to you, which is how people end up unable to watch the team they live beside.
  • More than twenty states now require age verification on adult sites, and in June 2025 the Supreme Court upheld the Texas version in Free Speech Coalition v. Paxton. Verification usually means handing a government ID or a face scan to a third-party checker, and a lot of adults would rather not do that.
What a VPN does about any of this is narrow, and worth stating plainly. It hides where your traffic goes from your provider, and it changes which region a site thinks you are in. It does not make anything legal that was not legal before, it does not get around checks tied to your account rather than your address, and streaming services do look for VPN traffic.

If you want to see what a site currently knows about you, check your IP address before and after you connect.