Is there a way to mass populate "County" for existing addresses? -Fusion Cloud CRM

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I'm using Fusion Cloud CRM

For tax reasons, we are now requiring  the "County" field to be populated for all shipping addresses. 

For all existing addresses, we can simply:

go into the address editor on the CRM Account Profile

Remove the ZIP

Replace the ZIP

the geography package will auto populate the county field

we save and close and the problem is solved for that address.

Is there a way for me to force whatever mechanism is looking up this county to loop through the whole sites table and populate the county field for every address?