They exist, but in New Jersey -- most of the "cities" (with the exception of downtown Jersey City and downtown Newark) would be called streetcar suburbs in an earlier time. I live in one of them, and it's great: I have a small, private backyard, but I'm also <15 minutes on foot from multiple public parks, restaurants, shops, etc.

Sadly, it's illegal to build streetcar suburbs in most of the US today, because outfitting every house with a private driveway, setbacks, etc., would move everything far apart enough to significantly hurt walkability.