RE: [CTPP] ACS 2005-2007 Population Estimates

San Francisco successfully challenged the Census Population Estimates, eliminating about half the discrepancy between Census estimate and DOF. See http://www.sfgov.org/site/mayor_index.asp?id=94792 _________________________________ Jeffrey P. Levin (jplevin(a)oaklandnet.com) Housing Policy & Programs Coordinator City of Oakland/Community & Economic Development Agency 250 Frank Ogawa Plaza, 5th Floor Oakland, CA 94612 510/238-6188 FAX: 510/238-3691 http://www.oaklandnet.com/government/hcd This email may contain material that is confidential, privileged and/or intended for the sole use of the intended recipient. Any review, reliance or distribution by others or forwarding without express permission is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies ________________________________ From: wendell cox [mailto:demographia@gmail.com] Sent: Thursday, June 25, 2009 2:54 PM To: ctpp-news(a)chrispy.net Cc: Levin, Jeffrey Subject: Re: [CTPP] ACS 2005-2007 Population Estimates Do not know the issue you are raising, however, Calif Dept of Finance estimates are high on municipal populations of SF and LA... by a large margin... this is in comparison to the annual Census Bureau estimates (which may or may not be related to ACS). On Thu, Jun 25, 2009 at 9:28 PM, Shimon Israel <SIsrael(a)mtc.ca.gov> wrote: For ACS 2005-2007 population and housing occupancy/vacancy estimates, are people finding discrepancies between ACS and other data sources, particularly in sub-county geographies? ACS estimates are controlled at the county level and, like the ACS 1-year data, ACS 2005-2007 population estimates are showing disagreement with other data sources. For example, the Oakland 3-year ACS estimate shows the population at 372,000, when CA Dept. of Finance estimates are over 400,000. This runs counter to the on-the-ground anecdotal experience - ACS shows a loss of 30,000 people during a period that showed an increase of 10,000 housing units. Will the decennial census correct this? My understanding is that Census 2010 numbers will be used to control 2010 ACS characteristic data. There will need to be some adjustment, however, given that the decennial census benchmarks population at April 1, and ACS uses a July 1 population number. It's also my understanding that population estimates for 2001-2009 will be updated, though retroactive adjustments for ACS characteristics will not be done. Does anyone else know something different about this? Other thoughts about this? Thanks, Shimon --------------------------------------------------------------- Shimon Israel Associate Transportation Planner/Analyst Metropolitan Transportation Commission 101 Eighth Street Oakland, CA 94607-4700 (510) 817-5839 (office) (510) 817-5848 (fax) --------------------------------------------------------------- _______________________________________________ ctpp-news mailing list ctpp-news(a)chrispy.net http://www.chrispy.net/mailman/listinfo/ctpp-news -- -- Wendell Cox Demographia | Wendell Cox Consultancy - St. Louis Missouri-Illinois metropolitan region Visiting Professor, Conservatoire National des Arts et Metiers, Paris France..33.6.16.63.58.76 USA..1.618 632 8507 www.demographia.com | www.publicpurpose.com | www.rentalcartours.net Books & Publications WAR ON THE DREAM: How Anti-Sprawl Policy Threatens the Quality of Life http://www.demographia.com/wod1.pdf 5th ANNUAL DEMOGRAPHIA INTERNATIONAL HOUSING AFFORDABILITY SURVEY (http://www.demographia.com/dhi.pdf) THE WAL-MART REVOLUTION: How Big-Box Stores Benefit Consumers, Workers, and the Economy By Richard Vedder & Wendell Cox