During the sessions that I conducted in 2007 there were several companies who remarked that when they searched Google Maps for their location, the results were not correct.
The source of Google maps is a company called NAVTEQ
On the NAVTEQ website is a feature called Map Reporter, it lets you submit what may be errors in the map (either street names or postal codes etc).
I gather that if we all get together and start submitting errors that will result in review of the entire provincal map, which benefits us all.
On a separate note if you go to the start page for Google Maps, in the bottom left corner is a link to "Add or Edit your business". It only takes a minute to set up a google business account and that will definitely aid in getting better google map results.
I hope that you find this information useful, and please feel free to pass it along to others who may benefit.