In a lot of suburbs of Atlanta* (and even within Atlanta itself!) you will find residential neighborhoods with no sidewalks. And these are definitely not rural.

In a lot of suburbs of Atlanta* (and even within Atlanta itself!) you will find residential neighborhoods with no sidewalks. And these are definitely not rural. * The choice of city is due to personal experience, but I doubt it's unusual - e.g. I'm pretty sure it's exactly the same in/around Miami.