IssueTracker

When using the Google Maps Geocoding API with the region bias parameter explicitly set to CH (Switzerland), searching for the postal code 4051 unexpectedly returns a location in Australia rather than the correct Swiss location. This behavior contradicts the expectation that region biasing should prioritize results within the specified region.

Searching for 4051 in google maps does offer 4051 Basel, Switzerland as a suggestion, the Geocoder however will not recognize this.

Steps to Reproduce:

Make a request to the Google Maps Geocoding API with the following parameters:
Address: 4051
Region Bias: CH
 Example URL:
https://maps.googleapis.com/maps/api/geocode/json?address=4051&region=CH&key=YOUR_API_KEY

https://maps.googleapis.com/maps/api/geocode/json?address=4051&components=region:ch&key=YOUR_API_KEY

Observe the API response.

Expected results for 4051 in switzerland would be
lat: 48.13.....
lon: 11.56.....

observed results are:
lat: -27.4261914
lon: 152.9882693