FTA uses Table B17024 (AGE BY RATIO OF INCOME TO POVERTY LEVEL IN THE PAST 12 MONTHS) from the 5-year ACS for the low income population data they need in their urban formula assistance calculations.  FTA uses Urban areas as the geography for their calculations.  But the table also provides data at the Tract level.


As Patty noted – the error estimates are huge.


Chuck Imbrogno, Models/Data Manager

Southwestern Pennsylvania Commission

Two Chatham Center – Suite 500

112 Washington Place

Pittsburgh, PA 15219-3451

voice:  412-391-5590 ext 319

fax:  412-391-9160


From: Patricia Becker [mailto:pbecker@umich.edu]
Sent: Wednesday, January 29, 2020 2:25 PM
To: ctpp-news@mailman.chrispy.net
Cc: ctpp-news@chrispy.net
Subject: [CTPP] Re: FW: Question Regarding Mapping Low Income Population by Census Tract


If you're looking for median household income, it should be available at the tract level in the 2019 five year ACS data. You have to go to data.census.gov to get access to that data set -- good luck. If you're willing to settle for the 2018 file (which is 80% the same data), you should still be able to go to American Factfinder (factfinder.census.gov), where access is better.  Bear in mind that the margins of error on income data at the tract level are huge. 


Patty Becker


On Wed, Jan 29, 2020 at 2:09 PM Weinberger Penelope <pweinberger@aashto.org> wrote:

Hey CTPPers, I received this query, I welcome your thoughts.



We are currently looking at environmental justice factors on Urban Arterials in the Denver Metro area, and I was wondering if you might have any insights into mapping low income population by census tract. The only data I have been able to find includes low and moderate income (from HUD), and I am having trouble even finding that data at the tract level. Do you know of a good data source for this? Any help or insights would be greatly appreciated.

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Patricia C. (Patty) Becker
APB Associates/Southeast Michigan Census Council (SEMCC)
28332 Franklin Rd, Southfield, MI 48034
office: 248-354-6520