There's another equally important issue. You're using a database from the Census which by definition isn't directly related to USPS Zip Codes but a thing the Census calls "ZCTA" or Zip Code Tabulation Area. Search Google for the differences between the two. For one, there are a lot fewer ZCTA's than USPS Zip Codes and another, the last time ZCTA's were updated was around 2003. You won't get similar results from the data you have vs. data other web sites (like ours for instance) use. Trust your coding (trust but verify!) and algorithms, not the results others obtain.
Rossko brings up a very important point as well. How you define "within radius" is going to get you vastly different results depending on your implementation. -John Coryat http://maps.huge.info http://www.usnaviguide.com http://www.zipmaps.net -- You received this message because you are subscribed to the Google Groups "Google Maps API V2" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-maps-api?hl=en.
