I'm in the middle of a major metropolitan area, in an area that was at one time suburbs but is now just sprawl.
The only thing on that list I couldn't technically walk to in 15 minutes is a sports arena. There's daycare centers, urgent cares, a handful of restaurants, bars, my choice of grocery stores and specialty shops all within walking distance.
Technically
You wouldn't fucking want to. To get to any of those things I have to cross at least one, possibly two major 4 lane roads that're busy as hell all hours of the day. There's one gas station I can get to, and a handful of smaller shops by going through my neighborhood, right at the edge of the 15 minute walk, and that's it.
Unless it's a church, there are 4 churches I can easily get to walking without crossing any major roads.