OMB can changes them quite often

http://www.census.gov/population/www/metroareas/metrodef.html

http://www.whitehouse.gov/omb/inforeg_statpolicy/

From: ctpp-news-bounces@chrispy.net [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of Nancy Reger
Sent: Wednesday, July 22, 2009 4:31 PM
To: ctpp-news@chrispy.net
Subject: [CTPP] using the ACS to define metro areas

Does anyone know whether metro areas, or whatever they are called, will be adjusted annually based on results of the ACS county level data? Or what data will be used in the definitions? Historically it’s been based on the decennial census numbers about county commuter patterns and population growth.

Nancy Reger, AICP

Assistant Director, Transportation

Mid Ohio Regional Planning Commission

111 Liberty St. Suite 100

Columbus, Ohio 43215

p (614) 233-4154 / e nreger@morpc.org