Hi Everyone - here is a DRAFT of my article for the next issue of the
CTPP Status Report, which we plan to finalize in early December. So,
you will see GAPS but I hope no errors, especially as Phil Salopek has
not yet reviewed my draft.
"Workplace Geography" now part of ACS Standard Tabulation Package
by Elaine Murakami, FHWA
The Census Bureau is now issuing tables for workplace geography using
Previously, the only standard Census product using workplace geography
was the County-to-county flow tabulation (put link here). Otherwise,
workplace tabulations were part of the CTPP, the special tabulation
completed from the AASHTO pooled fund.
Already, the Census Bureau has released four Workplace Tables for
southeastern States impacted by recent hurricanes (Alabama, Arkansas,
Florida, Georgia, Louisiana, Mississippi, and Texas). By January 2006,
__ additional tables at workplace geography will be posted to the ACS
webpage. As ACS is a continuous survey with small samples each month,
tabulations are currently available only for areas (States, County,
Places) with more than 250,000 population. Because the ACS in 2004
was only in a test phase, it is perhaps best to treat this information
as training in familiarity with planned ACS products.
In late 2006, tabulations for areas with more than 65,000 population
will be available, as ACS went into full implementation in 2005.
Sex by Means of Transportation to Work
Means of Transportation to Work by Travel Time
Sex by Place of Work - State and County Level
Aggregate Travel Time to Work by Sex
Means of Transportation to Work by Industry
Means of Transportation to Work by Class of Worker
For a complete list of Workplace Geography tables, please see (put link
here to Phil's list? Or link to the CB ACS page Table List)
Mode to Work
Work at Home
1. ACS consistently has less carpooling. From Decennial 2000,
Hispanic workers are the most likely to carpool, and that neighborhoods
with high Hispanic population have much lower mail-back response rate
than White, Non-Hispanic neighborhoods in ACS. Perhaps the 2005 ACS
results will be more similar to Decennial 2000 results as higher
non-response follow-up field interviewing that began in 2005 should
capture Hispanic, Black and Native-American populations more accurately.
2. Census 2000 includes population in Group Quarters. (What do we
know about GQ workers in 2000? Nationwide, about 36% of the
non-institutionalized Group Quarters population are workers. So there
are an estimated 5,900 additional GQ workers in Miami-Dade (didn't want
to try to use PUMS to figure this out). So, probably would not make
any difference in overall Miami-Dade figures 6000 workers out of
900,000.-might bump up "walk" a little bit, since nationwide, about 40%
of workers in group quarters walk to work.
[mailto:firstname.lastname@example.org] On Behalf Of Chuck Purvis
Sent: Monday, November 21, 2005 10:29 AM
Subject: [CTPP] New 2004 ACS data on American Factfinder: Missing
1. The Census Bureau released the "balance" of the 2004 ACS tabulations
on American Factfinder this past Thursday, 11/17/2005. Or so we thought.
We're currently wading through the "CTPP Part 1 - like" tables that were
just released, but we're concerned about four tables in particular.
Can someone at the Census Bureau or USDOT comment on the four tables
that are "placeholder tables" in American Factfinder, but don't yet have
data? These are the "workplace geography" tables:
B08406 Sex of Workers by Detailed Means of Transportation for Workplace
B08526 Means of Transportation to Work by Industry for Workplace
B08528 Means of Transportation to Work by Class of Worker for Workplace
B08534 Means of Transportation to Work by Travel TIme to Work for
Hopefully the data is "coming soon"!
2. A different question about geography in the ACS: when will the
Census Bureau convert from the older metropolitan area to the newer
metropolitan area definitions? That is, converting from the
MSA/PMSA/CMSA geographies to the CBSA/CSA geographies? [My guess is this
will change with the release of the 2005 ACS data, next summer, but it
would be useful to confirm.]
Thanks in advance!
Charles L. Purvis, AICP
Principal Transportation Planner/Analyst
Metropolitan Transportation Commission
101 Eighth Street
Oakland, CA 94607-4700
(510) 817-5755 (office) [new, 8/1/05]
(510) 817-7848 (fax) [new, 8/1/05]
Census WWW: http://www.bayareacensus.ca.gov/
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