Looks like this might be it:
http://www.census.gov/geo/www/cob/ua2000.html
Teresa LaSalle
Senior Transportation Planner
Capital District Transportation Committee
One Park Place
Albany, NY 12205
518-458-2161 - Phone
518-459-2155 - Fax
From: ctpp-news-bounces@chrispy.net [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of Dickson, Brian
Sent: Tuesday, July 10, 2012 11:07 AM
To: ctpp-news@chrispy.net
Subject: [CTPP] 2000 Urbanized Area
Hello,
Maybe someone out there can help me. I am trying to find the 2000 Census Urbanized Area shapefiles so we can do a comparison of the 2000 vs. 2010 urbanized area boundaries. I have been searching all over the Census website and they have had great success in hiding this data from view. If anyone out there has the link to where you can download the 2000 urbanized area boundaries I would greatly appreciate it!
Brian Dickson
City of DeKalb / DSATS
223 S. 4th St., Suite A
DeKalb, IL 60506
Email: brian.dickson@cityofdekalb.com
Website: http://www.dsats.org
Phone: 815-748-2367
Fax: 815-748-2359
Secretary: 815-748-2070