We're in that latitude but have not received an invite yet. They may already have enough beta sites in WA state.StarLink does not have a coverage map but I just noticed that there is a map of sorts here:
The known invite range is 44.9°N to 51.1°N at the moment.
The 900 or so satellites are in non-geosynchronous orbits so they cover all of the planet except the polar regions. Another launch of 60 satellites is scheduled for tonight, BTW.
Here is a live map of all the satellites And here is an how to for the map