Re: [CTPP] Question about 2000 Census Income data

Ben, The 2K PUMS data set uses geographic areas of State, Region, Division, PUMA5 and PUMA1. Public Use Microdata Areas (PUMA5 - 5% sample) are required to have a population of 100,000. The PUMA1 (1% sample) are required to have a population of 400,000. Counties with population of 100,000 will be combined with a neighboring jurisdiction to reach the 100,000 population threshold. Jurisdictions in excess of 200,000 can have multiply PUMAs within a jurisdiction (for the 5% sample). You can download PUMA boundaries from Census - http://www.census.gov/main/www/pums.html Charles -----Original Message----- From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of Ben Silverman Sent: Thursday, July 11, 2013 11:50 AM To: ctpp-news(a)chrispy.net Subject: [CTPP] Question about 2000 Census Income data 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 http://www2.census.gov/acs/downloads/pums/2000/ 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? -Ben Silverman Regional Plan Association _______________________________________________ ctpp-news mailing list ctpp-news(a)ryoko.chrispy.net http://ryoko.chrispy.net/mailman/listinfo/ctpp-news