Don't you want:
State: ID, ZipCode: 83713?
I would set up an import into a staging table with a text field and then use a script to extract the data from the records in the staging table.
Either that or use a text wrangler type utility to make a batch modification of the data to get it into a better format before import. If you can get the text onto a single line, for example, you could import the data into a text field and set up your other fields with auto-enter calculations that parse out the various values during the import.