We do, too. The key is to define low-income for your analysis. In the SF Bay Area transit agencies all use 200% of the Federal Poverty Rate as the low-income cut off, and you should be able to get Census data on that basis. For example table B17026, “RATIO OF INCOME TO POVERTY LEVEL OF FAMILIES IN THE PAST 12 MONTHS” shows the population (in this case, number of families) with income under 50% of the federal poverty level, 50-74% of the FPL, and so on, up to 5 times the FPL. You should be able to find other data like that by tract, and even by block group.



Title VI Program Administrator

Alameda-Contra Costa Transit District

1600 Franklin Street, Oakland 94612

510-891-4719 | sgoodman@actransit.org | www.actransit.org/CivilRights


From: Jackie Eastwood <jeastwood@lacrossecounty.org>
Sent: Wednesday, January 29, 2020 11:05 AM
To: ctpp-news@mailman.chrispy.net
Subject: [CTPP] Re: Question Regarding Mapping Low Income Population by Census Tract


We use ratio of income to poverty. You can define low-income as the poverty line or some percentage of the poverty line. We use 150%.


Jackie Eastwood

Transportation Planner

La Crosse Area Planning Committee

212 6th St N, Room 1200

La Crosse Wi  54601

608.785.6141 or 608.792.0520 (cell)


From: Weinberger Penelope <pweinberger@aashto.org>
Sent: Wednesday, January 29, 2020 12:58 PM
To: ctpp-news@chrispy.net
Subject: [CTPP] FW: Question Regarding Mapping Low Income Population by Census Tract


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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