The US Postal Service site:
http://www.usps.gov/ncsc/lookup/lookup_zip+4.html
Go get 'em...

Ron Fellows, Editor, THE GLYPH
http://www.web-sculptors.com/glyph/open.html

Museum wrote:
>
> Does anyone know of software for tracking zip codes?  We ask our visitors
> for their zip codes, but don't have an efficient way for using that
> information.  MacIntosh would be our first choice, but we do have a pc as
> well.
>
> Thanks for your help.
>
> Laurie Van Ark
>
> [log in to unmask]
> The Holland Museum
> 31 W 10th St
> Holland MI  49423