fyi. Here's some stats on the Hampton Roads area of Virginia relating
to group quarters workers from the 2000 Census. This is relevant to the
2005 ACS data because it gives us an idea of what we are missing. I'm
sure that the impact of not inlcuding group quarters is greater here
than for many other areas. But if you did a similar check, I wouldn't
mind seeing the results for your area. Thanks.
2000 GQ workers
27,795 group quarters (gq) workers in 2000; this is 3.7% of all
workers in the region.
All workers Household workers
Drove alone 78.9% 80.9
Carpool 12.1 12.0
Pub Trans 1.7 1.7
Bike/walk 3.0 1.9
Work at home 2.7 2.3
Other 1.6 1.2
So, just including the HH workers raises the % Drove Alone by +2.0% and
decreases the Bike/walk by -1.1%.
2000 Travel Time to Work [calc'd via 2000 5% PUMS for the Virginia
portion of our MSA]
All workers: 23.9 minutes
Household workers: 24.2
GQ workers: 14.8
So, just including the HH workers raises the travel time to work by
Andy Pickard, P.E.
Senior Transportation Engineer
Hampton Roads Planning District Commission
723 Woodlake Drive
Chesapeake, VA. 23320
Phone: 757.420.8300 Fax: 757.523.4881