Map Controls
Census Tract Data (2009 - 2016)
Population Data
Data layer created using U.S. Census Bureau data that includes details on race and population changes at the census tract level between 2009 and 2016. Layer symbolized to illustrate percent change in total population in each tract.
Pop. Decrease (-49%)
Pop. Increase (+98%)
Housing Data
Data layer created using U.S. Census Bureau data that includes details on race and population changes at the census tract level between 2009 and 2016. Layer symbolized to illustrate percent change in total population in each tract.
# Unit Decrease (-38%)
# Unit Increase (+40%)
Income Data
Data layer created using U.S. Census Bureau data that includes details on race and population changes at the census tract level between 2009 and 2016. Layer symbolized to illustrate percent change in total population in each tract.
Inc. Decrease (-63%)
Inc. Increase (+82%)

African American Neighborhoods
African American neighborhoods defined by census tracts that have had a majority African American population in four of the last five decennial census counts.
Neighborhood Boundary

Context Data

City Layers

Zoning Districts
Data layer depicting Chicago zoning symbolized by each zoning district's general use.
  1. Business
  2. Commercial
  3. Downtown Core
  4. Downtown Mixed
  5. Downtown Res.
  6. Downtown Service
  7. Manufacturing
  8. Parks
  9. Planned Dev.
  10. Planned Manu.
  11. Residential
  12. Transportation
Filter Zoning Districts
Chicago Neighborhoods
Layer depicting the boundaries of Chicago neighborhoods.
Neighborhood Boundary
Search Neighborhoods
CTA Transit Lines
Point and line data layer showing the location of Chicago Transit Authority (CTA) transit lines.
  1. Station
  2. Line
Colleges & Universities
Point data layer showing the location of institutions of higher education within Chicago.

Development Layers

Fed. Historic Tax Credit Projects
Point data layer representing Federal Historic Preservation Tax Credit projects completed in Chicago between 2009 and 2016.
  1. Housing
  2. Multi-Use
  3. Commercial
  4. Office
  5. Hotel
  6. Other
  7. Not Reported
Demolition Permits
Data layer illustrating demolition permits granted in Chicago between 2009 and 2016. The data is clustered at higher zoom levels. Zoom in to view individual points and view popup for permit information.
Permit Location 23 Permit Cluster

Designation Layers

Local Historic Districts
Data layer representing the boundaries of all designated Chicago historic districts, regardless of designation date.
Search Local Historic Districts
Nat. Register Historic Sites
Data layer representing all sites listed on the National Register of Historic Places before 2017.
Nat. Register Historic Districts
Data layer representing the boundaries of all listed National Register of Historic Places historic districts, regardless of designation date, within the city of Chicago.
Search National Register Historic Districts

Historic Layers

HOLC Boundaries (1935-1940)
Home Owner's Loan Corporation (HOLC) boundaries created between 1935 and 1940 illustrating all HOLC Grades.
  1. Grade A
  2. Grade B
  3. Grade C
  4. Grade D
Filter HOLC Boundaries

Layer Opacity
To change layer opacity, select a layer from the dropdown list. Next, adjust the layer's opacity using the range slider to the left. Press the reset button below to reset all layers to their default opacity.

Find an Address
Enter an address into the search box and select the desired address from the suggestion box. The application will zoom to the selected address and mark it with a black point.