Description: All data contained in this data set was downloaded from HUD in January of 2025. Please see the HUD site here: https://hud.maps.arcgis.com/home/item.html?id=279eca0222754f8a954bbf8cf995a1a3#overviewThese HUD-provided data are the Low Moderate Income Summary Data (2016-2020 ACS) geographically joined to the 2020 National Geodatabase from the U.S. Census Bureau. For more details on the use of these data, please refer to CPD Notice 24-04.These data provide estimated counts of persons based on their family income as either:Low: at or below 50% of the area median income AMI, LowMod: at or below 80% of AMI, and LMMI: at or below 120% of AMI (just for the NSP program)Calculating LMI % = (LOWMOD Data Field (# LMI Persons) Geography A + LOWMOD Data Field (# LMI Persons) Geography B + LOWMOD Data Field (# LMI Persons) Geography C…) ÷ (LOWMODUNIV Data Field (LMI Universe) Geography A + LOWMODUNIV Data Field (LMI Universe) Geography B + LOWMODUNIV (LMI Universe) Geography C…)*If exporting the csv file to Excel, the overall LMI percentage function would be =sum(lowmod)/sum(lowmoduniv)Margin of ErrorThe MOE does NOT provide an expanded range for compliance. For example, a service area of 50 percent LMI with a 2 percent MOE would still be just 50 percent LMI for compliance purposes. However, the 2 percent MOE would inform the grantee about the accuracy of the ACS data before undergoing the effort and cost of conducting a local income survey. See CPD Notice 24-04 for more details on using the margin of error.