Counties are available to all address records.
Note: You cannot delete a record that is in use. One solution is to create an entry called, "Undefined" or "Unknown" and merge the unwanted entries into that one.
Maintaining Counties
1.On the Home ribbon, choose Lists from the Settings section.
2.On the System Lists window, expand the Addresses section.
3.Choose Counties
4.Modify the list as needed.
Combining Values
Entries on this list can be combined into one. See Merging/Combining Values for details.