The US is a huge place with lots and lots of different types of communities. From my understanding, some of the older cities on the east coast may have old town walking districts that are probably more like what you’re used to.
I will give you a personal example. I live in Silicon Valley, not in San Francisco or Oakland but rather in what some might call a suburb of those cities, though my “town” has over 80k residents. I live in an area of my city that was once unincorporated and is about two miles from the old town city center. The closest grocery store is 0.7mi from me according to Google maps, and it’s a small family-owned grocer that I’m super happy to have. The larger supermarket is a mile and it’s down a large stroad.
It takes me about 45 minutes to drive to SF with no traffic. If I want to go to Los Angeles, it’s a six hour drive minimum without traffic going 80mph.
Salem to Sacramento shouldn’t take that long unless there is gnarly traffic. As a kid, my family regularly did San Jose to Seattle in 16 hours.