US didn't have it to my knowledge, so it was indeed a novelty when visiting Europe in the 90s to experience it.
Circa 1992, a friend's house had a then-fancy Zenith TV that supported Teletext, which was unusual at the time. IIRC it worked with exactly one cable channel in our town, TBS, and it had a fair variety of news and information. I enjoyed playing around with it when I visited, much to my friend's bemusement.
Eventually, TVs with Teletext (and closed captioning) became much more common, but by then the ship had sailed. The service was NLA by the time we had a TV with these capabilities in our own home.