Are you satisfied with a definition of vacant unit as "mails had not been collected for 90 days? ________________________________ Richard Lin, Ph.D. Demographer Colorado Department of Local Affairs Division of Local Government 1313 Sherman Street, Room 521 Denver, CO 80203 Phone: (303)866-4989 Fax:: (303)866-2660 richard.lin(a)state.co.us www.DOLA.Colorado.Gov Big tourism payoff Sent via BlackBerry from Cingular Wireless -----Original Message----- From: &lt;Nanda.Srinivasan(a)dot.gov&gt; Date: Tue, 19 Jun 2007 11:58:06 To:<ctpp-news@chrispy.net> Subject: [CTPP] Vacancy Rates by quarter This is with regard to questions on vacancy rates by season. I recently had a chat with Jon Sperling at HUD (during a walk on the mall) and he pointed me to these datasets (acquired from USPS) that list vacancy rates for each census tract by quarter and year. http://www.huduser.org/datasets/usps.html <http://www.huduser.org/datasets/usps.html> I have not used these much, but am intrigued. The datasets are comparatively new (introduced in December 2006). HUD is looking for user feedback. I found that the data can be joined and easily plotted using a nationwide Census Tract shapefile. I can see quite a few applications in examining these data for transportation planning applications. Also see the data dictionary at http://www.huduser.org/datasets/usps/USPS_Data_Dictionary.pdf The contact person for these datasets is Robert Renner. Thank you Nanda Srinivasan _______________________________________________ ctpp-news mailing list ctpp-news(a)chrispy.net http://www.chrispy.net/mailman/listinfo/ctpp-news _______________________________________________ ctpp-news mailing list ctpp-news(a)chrispy.net http://www.chrispy.net/mailman/listinfo/ctpp-news