When I first started learning about Genealogy location format was city, county, state, country.
If the city was not known or the city was known but not the county it should be indicated by using the comma ",". For example if I did not know the county I would list this way city, , state, country. Or if I knew the county but not the city I would list it this way , county, state, country .
In the newer computer programs it seems that the commas are omitted if it is not know. For example county, state, country with no comma to indicate no city, or city, state, country with no comma to indicate the missing county information.
So what is the preferred method of entering the location information?