OOPS! I sent out the incorrect URL. The url I sent first was the one the IT people send to me for checking! Here is the correct link:
Elaine
From: Murakami, Elaine (FHWA)
Sent: Monday, August 27, 2012 1:58 PM
To: ctpp-news@chrispy.net
Subject: comparing Census 2000 with 2006-2010 ACS results on Journey to Work
FHWA has created CTPP profile sheets using ACS 2006-2010 and Census 2010 data (these profiles will be published in the near future). Top 30 counties and places (cities and CDPs) with highest increases in Public Transportation, Walk and
Bike are extracted from the profile sheets and the lists are available in this link:
We limited the list to counties and places with 2010 Census population over 50,000.
Because the ACS is a different survey, compared to the Census 2000 “long form”, the results are not exactly comparable. But because trend analysis is important, we have developed these spreadsheets to give transportation planners a handy
way to examine trends by including two time points and to look at the differences between Census 2000 results, and the 2006-2010 ACS.
Differences to remember:
1. The 2006-2010 ACS is the compilation of survey over 60 months, and not a “point in time” like the decennial census.
2. Because the ACS covers all 12 months of the year, areas with seasonal population shifts, e.g. snowbirds, summer homes, and universities are likely to see the more differences than in other locations and reflect both the change
is time, as well as change in survey methods.
3. ACS 5-year data are approximately one-half the sample size as the Census 2000 long form, therefore the MOE are much larger.
The full list of counties and places with changes in Public Transportation, Walk and Bike can be found in Cambridge Systematics ftp site.
ftp://ftp.camsys.com/clientsupport/CTPPdata/ , Username: 8305CTPP Password: 1900NJA
From your CTPP friends: Liang Long, Cambridge Systematics who is the CTPP Technical Support staff, and
Elaine Murakami, FHWA Office of Planning