Geocoding limitations are set by Google Maps. SLP does not do the actual geocoding, so if you test it out by adding a location with as little detail as possible , see if Google can geocode it. Otherwise you can opt to manually enter in the lat/long per location. No other way I can see around it. It sounds like a “territory” add-on or enhancement might be able to do something like that, but that is a possible future SLP add-on enhancement that will only be available to Premier customers.