It will be with the release of the 2010 ACS data later this year. See this note: ACS data products will begin to use the available Census 2010 geographic definitions for statistical areas in 2011, when the 2010 ACS data products are released. https://ask.census.gov/app/answers/detail/a_id/8804/~/american-community-su… From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of Steiss, Todd A. Sent: Thursday, April 07, 2011 9:20 AM To: ctpp-news(a)chrispy.net Subject: [CTPP] ACS and 2010 Block Groups Elaine/Ed: I'm working on a North Carolina Statewide Transportation Model (NCSTM) for NCDOT. I've just completed the development of the Statewide Model Zones (SMZs) using the recently released 2010 census block geography and have populated the SMZs with total population and households from the PL94-171 data. I'm now looking to use the block group data from the ACS 5 Year Summary File to supplement what I have from PL94-171. Not too surprising, the ACS data is based on 2000 block group geography, which is different than the 2010 block group geography. When should we expect any ACS data to be released that conforms to the 2010 census geography? Todd Todd A. Steiss, AICP, GISP Senior Planner Parsons Brinckerhoff 121 West Trade Street, Suite 1950 Charlotte, NC 28202 Direct: 704-342-5411 Main: 704-342-5401 Mobile: 704-906-7706 Fax: 704-342-8472 Email: steiss@pbworld.com<mailto:steiss@pbworld.com> ______________________________________________________________________ NOTICE: This communication and any attachments ("this message") may contain confidential information for the sole use of the intended recipient(s). Any unauthorized use, disclosure, viewing, copying, alteration, dissemination or distribution of, or reliance on this message is strictly prohibited. If you have received this message in error, or you are not an authorized recipient, please notify the sender immediately by replying to this message, delete this message and all copies from your e-mail system and destroy any printed copies.