The geography in PUMS files is PUMAs (Public Use Microdata Area[s]). PUMAs
must be at least 100,000 population. Large counties are divided into many
PUMAs. You need the PUMA maps. I'd suggest contacting your nearest State
Data Center -- they should have them. Then you can aggregate PUMAs into
counties. If any of the counties are under 100K population, they'll be
combined county PUMAs and you'll just have to live with that.
I hope this helps.
On Thu, Jul 11, 2013 at 11:49 AM, Ben Silverman <bsilverman(a)rpa.org> wrote:
I am attempting to to calculate the percentage
distribution of income by
quintile in 2000 for a number of counties in and around NYC. I was
attempting to use the the PUM files I found here
to do so, and was able to
use them to calculate those quintile percentages for the states of NY, NJ
and CT as a whole, but I couldn't figure out how to separate out the data
in them by counties or any other geographic sub-division. Is there a way to
separate the data in those files by county or other regions, or are their
other files I need in order to do so and where could I find them?
Regional Plan Association
ctpp-news mailing list
Patricia C. (Patty) Becker
APB Associates/Southeast Michigan Census Council (SEMCC)
28300 Franklin Rd, Southfield, MI 48034