I’ve mapped suburbs to County because that was the lowest level I’ve found in data category for geographic information. (Place and Address cannot be used for Filled Map at the time or writing this post). and I got Nothing! Not event a small area on the map. I’ve tried then removing the district and putting suburb, region, country format with County as the data category which didn’t helped again.
I’ve found that I can map some locations based on Postal Code as you see below. However not Postal Code is not always good distinguishing field for a region, as multiple regions might have a postal code shared.
Filled maps have the potential to be powerful tools, but they aren’t perfect. Check out Reza’s post for the full scoop.