Legacies of Institutionalized Redlining

This notebook contains the code and data for the paper "Legacies of Institutionalized Redlining: A Comparison Between Speculative and Implemented Mortgage Risk Maps in Chicago, Illinois" forthcoming in Housing Policy Debate.

Author: Wenfei Xu

Citation

If you would like to use the data and/or code from this repo, please use the following citation:

@article{doi:10.1080/10511482.2020.1858924,
author = {Wenfei Xu},
title = {Legacies of Institutionalized Redlining: A Comparison Between Speculative and Implemented Mortgage Risk Maps in Chicago, Illinois},
journal = {Housing Policy Debate},
volume = {0},
number = {0},
pages = {1-26},
year  = {2021},
publisher = {Routledge},
doi = {10.1080/10511482.2020.1858924},

URL = { 
        https://doi.org/10.1080/10511482.2020.1858924    
}

Data

The repo contains the following datasets:

• chicago_boundary: Current city boundary from City of Chicago data portal
• chicago_census_historical: Decennial Census tract data cross-walked back to 1940 tract boundaries, with population- and areal-weighted features, labeled for FHA and HOLC grades. These are used for the FHA and HOLC difference in differences analysis.
• chicago_housing/chicago_publichousing_historic: Dataset of Chicago Housing Authority public housing developments from 1938 to 1968. Re-drawn from 1985 Chicago Housing Authority Family Projects map at the Newberry Library
• chicago_neighborhoods: Current neighborhood boundaries from City of Chicago data portal
• holc_weights: Tracts and weights used for HOLC DiD.

The repo detailing how the tract data was crosswalked and labeled for redlining boundaries is in another repo here.

Requirements

These notebooks can be run using the Geographic Data Science environment. The only addition is patsylearn, which is a scikit-learn adaption of patsy, used for modeling and building design matices.