I spent a few hours today figuring out why the Google GeoCoder API was returning the error code “602” ( G_GEO_UNAVAILABLE_ADDRESS ) for an address in Clinton Township Michigan, but finds the address on the Google Maps page.

From what I gather from researching this issue is that Google possibly uses 2 different sets of data for Geocoding. One for their own use on Google Maps and another for their Google Maps API.

One solution that I discovered while testing data against their API was to check the Status code for a “602” error and then resubmit the information while leaving out the City information. This resulted in the API getting the Latitude and Longitude for the address.

Hopefully this will work for all addresses that return this error until Google updates this 2nd set of data or uses the same data source for both.