Zip Code Coverages needed

hi everyone.

does anyone know of any commercial or non-commercial sources of zipcode
coverages or boundary files? we're about to start a new research project
here at the university of cincinnati's school of planning, that requires
crime-tracking by zipcode.

also, i would welcome any suggestions about methodologies followed by
others for crime-related GIS projects.

thanks for your help.

anurag

p.s - in an attempt to circulate this request as widely as possible, i'm
mailing it to a lot of lists. my apologies in advance for multiple
postings.

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Anurag Mehta.
Graduate Student in Community Planning.
School of Planning, University of Cincinnati.

WWW Homepage: http://ucunix.san.uc.edu/~mehtaag/

All views expressed are my own. Any similarity with official university
views is purely coincidental.

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