Go to Tool>Options and Click on the Places tab
There you have a check box that controls counties
FTM Help Notes
Specifies options specific to place fields.
You have these options:
Check place authority when entering place names: Checks the database for the place name you entered. If it is not found, an icon appears at the end of the field. You can click the icon to open the Resolve Place Name dialog box where you can select the correct place name or have the Family Tree Maker accept (ignore) the place name you entered.
Exclude selected country from resolved place names: Specifies a country as a "home" country. Family Tree Maker will recognize that all locations in the tree from the selected country do not display the country in the place field and in reports. This helps make place names shorter. You can select None in the drop-down list to disable this feature (the country will display for all places).
Note: Any ignored place names (in which you had Family Tree Maker ignore the name) that contain the country will continue to list the country.
See also attached screen shot