[dba-Tech] Filling Word fields

I have a reader that wants to fill Word fields based on the selection of
another field -- sort of like choosing a Zip code and having code fill in
the appropriate city and state. This is easily done in Access and if
necessary, I could use Access to drive the whole thing. I'm wondering if
this can be done in Word without involving Access? Has anyone done anything
like this before?

Susan H.