How's Your Walk Score?
Check out this great site: Walk Score. It takes an address, tallies how close it is to things you'd like/need in your life like a grocery store, restaurants, bars, schools, etc. and then gives you a score based on how walkable you are.
I did my own house and I got a 75 out of 100. Not bad.
It's not perfect. It counts the dollar discount grocery store about 2 blocks away that only has a few items as a full fledged "supermarket", but it's good to get a feel. My friend looked up his parents house in suburban Illinois and it got almost a 50 (which was too high, because their house is very much not walkable) but it was because of all the Starbucks nearby. So it's not perfect, but it's still pretty cool.