Description: This layer, in combination with other point layers, identifies areas which may meet one of 4 criteria listed in the 2021 Tree Solutions Now Act of 2021. Specifically, the criteria: 4. A housing project as defined in § 12–101 of the housing and community development article. This layer is a static subset of MD DHCD Multifamily Sites located within U.S.C.B. Urban Areas from the Feature Service layer located here: https://data.imap.maryland.gov/datasets/maryland::maryland-multifamily-sites-multifamily-sites/about Accessed on March 30, 2026.
Copyright Text: MD Department of Housing and Community Development
Description: HUD furnishes technical and professional assistance in planning, developing and managing these developments. Public Housing Developments are depicted as a distinct address chosen to represent the general location of an entire Public Housing Development, which may be comprised of several buildings scattered across a community. The building with the largest number of units is selected to represent the location of the development. Location data for HUD-related properties and facilities are derived from HUD's enterprise geocoding service. While not all addresses are able to be geocoded and mapped to 100% accuracy, we are continuously working to improve address data quality and enhance coverage. Please consider this issue when using any datasets provided by HUD. When using this data, take note of the field titled “LVL2KX” which indicates the overall accuracy of the geocoded address using the following return codes: ‘R’ - Interpolated rooftop (high degree of accuracy, symbolized as green) ‘4’ - ZIP+4 centroid (high degree of accuracy, symbolized as green) ‘B’ - Block group centroid (medium degree of accuracy, symbolized as yellow) ‘T’ - Census tract centroid (low degree of accuracy, symbolized as red) ‘2’ - ZIP+2 centroid (low degree of accuracy, symbolized as red) ‘Z’ - ZIP5 centroid (low degree of accuracy, symbolized as red) ‘5’ - ZIP5 centroid (same as above, low degree of accuracy, symbolized as red) Null - Could not be geocoded (does not appear on the map) For the purposes of displaying the location of an address on a map only use addresses and their associated lat/long coordinates where the LVL2KX field is coded ‘R’ or ‘4’. These codes ensure that the address is displayed on the correct street segment and in the correct census block. The remaining LVL2KX codes provide a cascading indication of the most granular level geography for which an address can be confirmed. For example, if an address cannot be accurately interpolated to a rooftop (‘R’), or ZIP+4 centroid (‘4’), then the address will be mapped to the centroid of the next nearest confirmed geography: block group, tract, and so on. When performing any point-in polygon analysis it is important to note that points mapped to the centroids of larger geographies will be less likely to map accurately to the smaller geographies of the same area. For instance, a point coded as ‘5’ in the correct ZIP Code will be less likely to map to the correct block group or census tract for that address. In an effort to protect Personally Identifiable Information (PII), the characteristics for each building are suppressed with a -4 value when the “Number_Reported” is equal to, or less than 10. To learn more about Public Housing visit: https://www.hud.gov/program_offices/public_indian_housing/programs/ph/ Data Dictionary: DD_Public Housing Developments Date Updated: 12/2025
Copyright Text: U.S. Department of Housing and Urban Development
Name: Underserved Census Tracts (April 2026 - Present)
Display Field: NAME
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This layer delineates areas which meets one or more of 3 of the 4 criteria listed in the 2021 Tree Solutions Now Act of 2021. Specifically, 1. A neighborhood that was, at any point in time, redlined or graded as “hazardous” by the Home Owners’ Loan Corporation; 2. A census tract with an average rate of unemployment for the most recent 24–month period for which data are available that exceeds the average rate of unemployment for the state; 3. A census tract with a median household income for the most recent 24–month period for which data are available that is equal to or less than 75% of the median household income for the state during that period.' Unemployment and income metrics for the State, and by Census Tract, were obtained from the US Census Bureau American Community Survey (2020-2024). Values of '-1' for income and employment indicate the attribute was not estimated by the Census Bureau as a result of an insufficient number of sample observations. HOLC neighborhoods graded as "hazardous" were identified using data from: Robert K. Nelson and Edward L. Ayers, accessed March 30, 2026, https://dsl.richmond.edu/panorama/redlining/
Copyright Text: MD DNR Forest Service, US Census Bureau, University of Richmond, Nelson and Ayers
Description: This layer delineates areas which meets one of the 4 criteria listed in the 2021 Tree Solutions Now Act of 2021. Specifically, 1. A neighborhood that was, at any point in time, redlined or graded as “hazardous” by the Home Owners’ Loan CorporationHOLC neighborhoods graded as "hazardous" were identified using data from:Robert K. Nelson and Edward L. Ayers, accessed March 30, 2026, https://dsl.richmond.edu/panorama/redlining/
Copyright Text: MD DNR Forest Service, University of Richmond, Nelson and Ayers
Name: Census Tracts Below 75% of State's Median Income ($77,758)
Display Field: NAME
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This layer contains the metric estimates used to determine, in combination with the Census Urban Area Delineations, which census tracts meet one of the 4 criteria listed in the Tree Solutions Now Act of 2021. Specifically, 3. A census tract with a median household income for the most recent 24–month period for which data are available that is equal to or less than 75% of the median household income for the state during that period.' Unemployment and income metrics for the State and by Census Tract were obtained from the US Census Bureau American Community Survey (2020-2024).
Copyright Text: MD DNR Forest Service, U.S. Census Bureau
Name: Census Tracts Above the State's Average Unemployment (4.9%)
Display Field: NAME
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This layer is used to identify census tracts which meet of the 4 criteria listed in the Tree Solutions Now Act of 2021. Specifically, 2. A census tract with an average rate of unemployment for the most recent 24–month period for which data are available that exceeds the average rate of unemployment for the state. Unemployment and income metrics for the State and by Census Tract were obtained from the US Census Bureau American Community Survey (2020-2024).
Copyright Text: DNR Forest Service, U.S. Census Bureau
Name: Underserved Census Tracts (July 2021-May 2024)
Display Field: Name
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This layer has been deprecated, but maintained for posterity. Replaced in web map in May 2024.This layer delineates areas which meets one or more of 3 of the 4 criteria listed in the Tree Solutions Now Act of 2021. Specifically,1. A neighborhood that was, at any point in time, redlined or graded as “hazardous” by the Home Owners’ Loan Corporation;2. A census tract with an average rate of unemployment for the most recent 24–month period for which data are available that exceeds the average rate of unemployment for the state;3. A census tract with a median household income for the most recent 24–month period for which data are available that is equal to or less than 75% of the median household income for the state during that period."Unemployment and income metrics for the State and by Census Tract were obtained from the US Census Bureau American Community Survey (2015-2019). HOLC neighborhoods graded as "hazardous" were identified using data from: Robert K. Nelson and Edward L. Ayers, accessed March 15, 2023, https://dsl.richmond.edu/panorama/redlining/
Copyright Text: DNR Forest Service, U.S. Census Bureau, University of Richmond, Nelson and Ayers
Name: Underserved Census Tracts (May 2024-April 2026)
Display Field: Name
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This layer has been deprecated, but maintained for posterity. This layer was replaced in webmap with updated layer in April 2026.This layer delineates areas which meets one or more of 3 of the 4 criteria listed in the Tree Solutions Now Act of 2021. Specifically,1. A neighborhood that was, at any point in time, redlined or graded as “hazardous” by the Home Owners’ Loan Corporation;2. A census tract with an average rate of unemployment for the most recent 24–month period for which data are available that exceeds the average rate of unemployment for the state;3. A census tract with a median household income for the most recent 24–month period for which data are available that is equal to or less than 75% of the median household income for the state during that period."Unemployment and income metrics for the State and by Census Tract were obtained from the US Census Bureau American Community Survey (2018-2023). HOLC neighborhoods graded as "hazardous" were identified using data from: Robert K. Nelson and Edward L. Ayers, accessed March 15, 2023, https://dsl.richmond.edu/panorama/redlining/
Copyright Text: DNR Forest Service, U.S. Census Bureau, University of Richmond, Nelson and Ayers