In the Sunday NYT Magazine:
Last summer, a trio of Seattle software developers started walkscore.com, which calculates the number of potential destinations within walking distance of any given address and then produces a rating. If your neighborhood scores 90 or above, you can easily live there without a car; if it scores under 25, you’ll be driving to the backyard.
I entered a couple of random addresses in Alameda. As expected, neighborhoods in the vicinity of Webster and Park St have high walkscores (85 and 94, respectively), while it was significantly lower (40-50s) for Bay Farm.
Go ahead, lookup your Walk Scores!