Hi Jen

If you are only able to map 8 at a time it sounds like you are trying to map them as either shaded or sized circles.

If all of the zip codes are different (I take it the 200 locations all refer to different places) then you have to map them as PushPins.

Select the file you want to import and after the import has completed a "Map Type" dialog comes up. Select "Pushpin" (at the bottom) and in the next screen give it an appropriate symbol. This will then map all 200 in one go.

Hope this helps

I.T.