Have you heard of Walkscore.com?

My house scores a 49 out of 100, which means Walkscore considers my neighborhood to be "car dependent". I find that interesting because I have several strip malls and restaurants within walking distance of my house. We also have walking access to one of the best parks in Scottsdale, AZ

From the Walkscore website:
How It Works
Walk Score helps people find walkable places to live. Walk Score calculates the walkability of an address by locating nearby stores, restaurants, schools, parks, etc. Walk Score measures how easy it is to live a car-lite lifestyle—not how pretty the area is for walking.

What does my score mean?
Your Walk Score is a number between 0 and 100. Here are general guidelines for interpreting your score:

90–100 = Walkers' Paradise: Most errands can be accomplished on foot and many people get by without owning a car.
70–89 = Very Walkable: It's possible to get by without owning a car.
50–69 = Somewhat Walkable: Some stores and amenities are within walking distance, but many everyday trips still require a bike, public transportation, or car.
25–49 = Car-Dependent: Only a few destinations are within easy walking range. For most errands, driving or public transportation is a must.
0–24 = Car-Dependent (Driving Only): Virtually no neighborhood destinations within walking range. You can walk from your house to your car!
The Walk Score™ Algorithm
Walk Score uses a patent-pending system to measure the walkability of an address. The Walk Score algorithm awards points based on the distance to the closest amenity in each category. If the closest amenity in a category is within .25 miles (or .4 km), we assign the maximum number of points. The number of points declines as the distance approaches 1 mile (or 1.6 km)—no points are awarded for amenities further than 1 mile. Each category is weighted equally and the points are summed and normalized to yield a score from 0–100. The number of nearby amenities is the leading predictor of whether people walk.1

Your Walk Score may change as our data sources are updated or as we improve our algorithm. Check out how Walk Score doesn't work.