BNIA Mapping Resources

Geographic Boundaries Crosswalking Datasets Maps and Apps External Link: Census Boundary Files Access the U.S. Census Bureau's GIS TIGER/Line files for Census geographies, including blocks, block groups, tracts, zip code tabulation areas, and more via web interface or FTP. About Community Statistical Areas (CSAs) Why does BNIA-JFI use Community Statistical Areas (CSAs) and how were they devised? BNIA-JFI uses the 55 Community Statistical Areas (CSAs) to present a wide range of data from multiple sources as well as providing data for Baltimore City in a consistent way over time.  Clustering neighborhoods into CSAs was necessary  since most of the 270+ neighborhoods in Baltimore City do not have boundaries that fall along census tracts. As the city changes, Baltimore residents may shift their neighborhood’s boundaries or even change its name. Neighborhood lines often do not fall along CSA boundaries but CSAs are a  consistent representation of the conditions occurring within particular neighborhoods. The CSAs were initially designed by the Baltimore Data Collaborative with the Baltimore City Department of Planning. Four guidelines were established for constructing the CSAs: What’s the difference between a Census Tract, a neighborhood (Neighborhood Statistical Area), and a CSA? Changes to Community Statistical Areas (CSAs) Over Time Every decade, the U.S. Census Bureau has the option to make modifications to its Census Tract boundaries based on results of the decennial Census. BNIA-JFI's CSAs geographies are based on Census tracts so when changes are implemented, BNIA-JFI must make alterations if needed. Every decade is also an opportunity to review the names of CSAs to ensure that the label is appropriate for the area, given its unique identity and history. 2010 to 2020 In 2021 with the release of new Census Tract definitions, BNIA-JFI made the decision to maintain the existing geographic boundaries of its CSAs. Two Census Tracts contained within the Poppleton Community were merged but no other major changes occurred to impact overall CSAs. In the Spring of 2022, BNIA-JFI finalized name adjustments to seven CSAs going forward. Again, there were NO boundary changes from 2010 to 2020. You can read more about the process on our blog post. The table below details the changes. 2000 to 2020 From 2000 to 2010 there were boundary changes in Census Tracts which impacted the CSAs. The graphic below, click to enlarge, details the modifications which allowed for the creation of the Oldtown/Middle East and Harbor East/Little Italy CSAs. Cllick to view larger image in a new tab External Resources Below is a list of external sources for GIS and data beyond what BNIA provides. Links will open in a new tab. Baltimore CityOpen Baltimore CoDeMap Baltimore City Planning Department Map Gallery Baltimore City Health Department Map Gallery Regional/Maryland Maryland iMap Open Data Portal Baltimore Metropolitan Council Regional GIS Data Center GIS Resources at the Maryland State Data Center University of Maryland GIS Data Repository Baltimore County, Maryland GIS Data Downloads Howard County, Maryland Data Downloads Carroll County, Maryland Open GIS Data Portal Anne Arundel County, Maryland Data Downloads Maryland State Geographic Information Committee (MSGIC) District of Columbia Open Data National USGS Water Resources Maps and GIS Data National Map Small Scale Data.gov

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