I also think there are two kinds of walkable. There is a walkable area or neighborhood where you can find most of what you need without getting into a car or bus. Some small towns or even suburbs are designed that way. And then there are walkable cities where you can (if you want) travel miles on foot from one walkable area to another.
One problem in the US is there can be a perfectly walkable small city like Staunton VA, but there are outlying areas less than 2 miles from town that don’t have sidewalks and might require crossing major roads with no traffic lights, so good luck! (If that sounds specific, it’s because we sat in Staunton which is lovely and an architectual gem but walking home at night was a little terrifying.)