HOLC Redlining Grades and Present-Day Neighborhood Outcomes in Chicago

Descriptively, 2023 median income and homeownership fall and vacancy tends to rise as 1938 HOLC grades move A to D, mirroring the national pattern, wi

The real public data behind HOLC Redlining Grades and Present-Day Neighborhood Outcomes in Chicago. 1938 Chicago HOLC graded zones (Mapping Inequality) joined to ACS 2023 5-year tract estimates for Cook County. Files are hosted here directly so the analysis is reproducible; analysis.py reads only these files and prints the figures the paper reports.

• analysis.py

  Reproducible pandas script. Verifies the developments file is a subset of the portfolio, isolates OCII Western Addition-Area 2 (21 developments / 914 units / 821 income-restricted), tabulates tenure a

  Source: HOLC polygons: University of Richmond Digital Scholarship Lab, Mapping Inequality (already in repo). ACS estimates: U.S. Census Bureau, American Community Survey 5-Year Detailed Tables.

  14.8 kBDownload PYView at source

  This file is not a tabular CSV. Use the download button above to save it locally.

• build_acs_csv.py

  Provenance script documenting how cook-county-tract-acs-2023.csv was assembled from the Census Bureau ACS 2023 5-year table-based Summary File (.dat files for B19013, B25003, B25002) filtered to Cook

  Source: HOLC polygons: University of Richmond Digital Scholarship Lab, Mapping Inequality (already in repo). ACS estimates: U.S. Census Bureau, American Community Survey 5-Year Detailed Tables.

Documented Schema

What the cleaned archive will contain when complete. Column names and types may evolve until the archive ships.