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Low to Moderate Income Population by Block Group

Published by Office of Policy Development and Research, GIS Helpdesk and Open Data Division | Department of Housing and Urban Development | Catalog Last Checked: September 30, 2026 at 03:13 PM | Dataset Last Updated: April 24, 2025 at 08:33 PM
This service identifies U.S. Census Block Groups in which 51% or more of the households earn less than 80 percent of the Area Median Income (AMI). The Community Development Block Grant (CDBG) program requires that each CDBG funded activity must either principally benefit low- and moderate-income persons, aid in the prevention or elimination of slums or blight, or meet a community development need having a particular urgency because existing conditions pose a serious and immediate threat to the health or welfare of the community and other financial resources are not available to meet that need. With respect to activities that principally benefit low- and moderate-income persons, at least 51 percent of the activity's beneficiaries must be low and moderate income. The Community Development Block Grant (CDBG) program requires that each CDBG funded activity must either principally benefit low- and moderate-income persons, aid in the prevention or elimination of slums or blight, or meet a community development need having a particular urgency because existing conditions pose a serious and immediate threat to the health or welfare of the community and other financial resources are not available to meet that need. With respect to activities that principally benefit low- and moderate-income persons, at least 51 percent of the activity's beneficiaries must be low and moderate income. For CDBG, a person is considered to be of low income only if he or she is a member of a household whose income would qualify as "very low income" under the Section 8 Housing Assistance Payments program. Generally, these Section 8 limits are based on 50% of area median. Similarly, CDBG moderate income relies on Section 8 "lower income" limits, which are generally tied to 80% of area median. These data are from the 2016-2020 American Community Survey (ACS). To learn more about the Low to Moderate Income Populations visit: https://www.hudexchange.info/programs/acs-low-mod-summary-data/ , for questions about the spatial attribution of this dataset, please reach out to us at GISHelpdesk@hud.gov. Data Dictionary: DD_Low to Moderate Income Populations by Block Group Date of Coverage: ACS 2016-2020

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Complete Metadata
@type Dataset
accessRights Public
accrualPeriodicity irregular
bureauCode 
[
  "025:00"
]
contactPoint 
{
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  "@type": "vcard:Kind",
  "hasEmail": "mailto:GIShelpdesk@hud.gov"
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describedBy 
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description This service identifies U.S. Census Block Groups in which 51% or more of the households earn less than 80 percent of the Area Median Income (AMI). The Community Development Block Grant (CDBG) program requires that each CDBG funded activity must either principally benefit low- and moderate-income persons, aid in the prevention or elimination of slums or blight, or meet a community development need having a particular urgency because existing conditions pose a serious and immediate threat to the health or welfare of the community and other financial resources are not available to meet that need. With respect to activities that principally benefit low- and moderate-income persons, at least 51 percent of the activity's beneficiaries must be low and moderate income. The Community Development Block Grant (CDBG) program requires that each CDBG funded activity must either principally benefit low- and moderate-income persons, aid in the prevention or elimination of slums or blight, or meet a community development need having a particular urgency because existing conditions pose a serious and immediate threat to the health or welfare of the community and other financial resources are not available to meet that need. With respect to activities that principally benefit low- and moderate-income persons, at least 51 percent of the activity's beneficiaries must be low and moderate income. For CDBG, a person is considered to be of low income only if he or she is a member of a household whose income would qualify as "very low income" under the Section 8 Housing Assistance Payments program. Generally, these Section 8 limits are based on 50% of area median. Similarly, CDBG moderate income relies on Section 8 "lower income" limits, which are generally tied to 80% of area median. These data are from the 2016-2020 American Community Survey (ACS). To learn more about the Low to Moderate Income Populations visit: https://www.hudexchange.info/programs/acs-low-mod-summary-data/ , for questions about the spatial attribution of this dataset, please reach out to us at GISHelpdesk@hud.gov. Data Dictionary: DD_Low to Moderate Income Populations by Block Group Date of Coverage: ACS 2016-2020
distribution 
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identifier https://www.arcgis.com/home/item.html?id=09eceb08d95d429dae9f88fe39826bf1
issued 2024-10-02
keyword 
[
  "AMI",
  "Area Median Income",
  "Block Group",
  "Boundaries",
  "Community Development Programs",
  "Economy",
  "HUD",
  "Location",
  "Low to Moderate Income Areas",
  "Low-Mod",
  "Society",
  "U.S. Department of Housing and Urban Development",
  "hud.official.content"
]
landingPage 
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modified 2025-04-24T20:33:19.828Z
programCode 
[
  "025:000"
]
publisher 
{
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  "@type": "org:Organization",
  "subOrganizationOf": [
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      "name": "U.S. Department of Housing and Urban Development",
      "@type": "org:Organization"
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}
rights 
[
  "HUD and the dataset and metadata authors assume no responsibility for the use or misuse of the dataset. No warranty, expressed or implied is made with regard to the accuracy of the spatial accuracy, and no liability is assumed by the U.S. Government in general, the dataset creators or the U.S. Department of Housing and Urban Development specifically, as to the spatial or attribute accuracy of the data."
]
spatial 
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  "@type": "Location",
  "prefLabel": "United States and Minor Outlying Islands"
}
title Low to Moderate Income Population by Block Group

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