I am using the Google Geocoding API to return results based on a postcode search only. I get results ok but there is never a road/street component returned. This generally makes sense as the bounds of a postcode may span over several streets. How then can I then get a list of streets within those bounds or something similar to achieve an online postcode search?
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If I’m understanding you correctly, the following posts may point you in the right direction: returning street address google api and get street address by lat/long.
I assume your goal is to display these on a map. If not, be aware of Google’s TOS so you don’t take a wasted path as others have done (sometimes unknowingly). Specifically: “Note: the Geocoding API may only be used in conjunction with a Google map; geocoding results without displaying them on a map is prohibited.”
This link regarding address validation has some good information as well that may assist you (it gives some details about google and offers some alternatives.
good luck