You need to add a formatting switch to the merge field.
See "Formatting Word fields with switches" on fellow MVP Graham Mayor's
website at
http://www.gmayor.com/formatting_word_fields.htm

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Hope this helps.
Please reply to the newsgroup unless you wish to avail yourself of my
services on a paid consulting basis.
Doug Robbins - Word MVP
> Trying to create a mail merge in Word and selected my recipients (an Excel
> file). In the Excel file I have several zip codes that begin with zero
[quoted text clipped - 4 lines]
> that begin with zero. AND the longer zip codes only show the first digit.
> Does anyone know how to fix this?