Here are the fields in our zipcode database, As stated as long as you can find a zipcode cvs you can manipulate into the format of the zipData database you should be okay
Content visible to verified customers only.
That might work for you but never manipulated the data so really cant say. Provence would go into state, postalcode is zipcode
You will need to fit an empty column in your cvs where areacode data is thats not important.