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SRD RESEARCH DATA PORTAL

Structural Racism & Discrimination Index Data

Explore and download U.S. county-level structural racism and discrimination index data (1990–2020) for research, spatial analysis, and policy evaluation.

1990–2020 U.S. County-Level Data CSV & Geodatabase Explore Datasets →

SRD Data Sources & Availability

We obtained data from 7 unique nationally representative data sources. See the table below for a snapshot of data sources and their availability by years.

01   Residential Segregation   ·   2 indicators   ·   Click to expand
Indicators1990200020102020Data Sources
Racial Concentration ✓ ✓ ✓ ✓ IPUMS National Historical Geographic Information System (NHGIS)
Racial Diversity ✓ ✓ ✓ ✓ IPUMS National Historical Geographic Information System (NHGIS)
02   Housing   ·   2 indicators   ·   Click to expand
Indicators1990200020102020Data Sources
Home-Mortgage Loan Denial Gap ✓ ✓ ✓ ✓ Federal Financial Institutions Examination Council (FFIEC)
Home Ownership Gap ✓ ✓ ✓ ✓ IPUMS National Historical Geographic Information System (NHGIS)
03   Income   ·   3 indicators   ·   Click to expand
Indicators1990200020102020Data Sources
Median Household Income Gap — ✓ ✓ ✓ IPUMS National Historical Geographic Information System (NHGIS)
Unemployment Gap ✓ ✓ ✓ ✓ IPUMS National Historical Geographic Information System (NHGIS)
Below-Poverty Gap ✓ ✓ ✓ ✓ IPUMS National Historical Geographic Information System (NHGIS)
04   Healthcare Resources   ·   4 indicators   ·   Click to expand
Indicators1990200020102020Data Sources
Primary Care — ✓ ✓ ✓ Health Resources and Services Administration (HRSA)
Mental Health Care ✓ ✓ ✓ ✓ County Health Rankings (2020 and 2010); Health Resources and Services Administration (HRSA) (2000 and 1990)
Dental Health Care — — ✓ ✓ Health Resources and Services Administration (HRSA)
Health Uninsurance Gap — — ✓ ✓ IPUMS National Historical Geographic Information System (NHGIS)
05   Crime and Incarceration   ·   5 indicators   ·   Click to expand
Indicators1990200020102020Data Sources
Violent Crime Arrests Gap ✓ ✓ ✓ ✓ Inter-university Consortium for Political and Social Research (ICPSR), University of Michigan
Property Crime Arrests Gap ✓ ✓ ✓ ✓ Inter-university Consortium for Political and Social Research (ICPSR), University of Michigan
Incarceration Gap ✓ ✓ ✓ ✓ Vera Institute of Justice
Homicide Fatalities Gap ✓ ✓ ✓ ✓ Centers for Disease Control and Prevention (CDC)
Firearm Fatalities Gap ✓ ✓ ✓ ✓ Centers for Disease Control and Prevention (CDC)

✓ Available   — Not available. Expand a dimension to view its details.

SRD DATA REPOSITORY

Download SRD Data

Choose a dataset format and download the available SRD data. CSV files offer flexible geographic selection, while geodatabase archives are organized by year.

Each county is one row; indicators are columns.
Decennial reference years
Select the national dataset or a single state.
Selected dataset
United States · 2020
Wide Format · CSV
Suggested filename: SRD_2020_US_Wide.csv
Download CSV ↓

You will download a zipped folder with: Data, data dictionary, list of data sources, data model figure, and a README file with instructions.

DATA DOCUMENTATION

Documentation & Resources

Find variable definitions, data-source availability, and instructions to support your analysis.

TWO FORMATS
Data Dictionary

Variable definitions, indicators, and coding conventions for each CSV layout.

Choose the dictionary that matches your download.
PDF REFERENCE
Sources & Availability

Review data-source coverage and availability across the 1990–2020 reference years.

View sources PDF Data availability by year and source.
USER GUIDE
README & User Guide

Learn how to work with the datasets and interpret missing-value codes.

Open README DOCX Access the complete README and user guide (.docx).

Missing Value Codes

The following codes explain why specific observations may be missing, suppressed, or unavailable for calculation.

CodeDescription
-111Suppressed data due to very low (less than 100) Black or African American population in the county.
-222Missing data from source.
-333State-level calculation not applicable for the District of Columbia.
-444Insufficient data for any calculations (e.g., z-scores, scores, labels).
Important Note: For more information, please read the README file in the downloaded ZIP folder carefully.

What is included?

The SRD framework spans residential segregation, housing, income, healthcare resources, and crime and incarceration. Indicator availability varies by year.

You will download a zipped folder with: Data, data dictionary, list of data sources, data model figure, and a README file with instructions.

Data versions & citation

  • Data Repository: The SRD datasets are hosted on Zenodo, an open-access research data repository.
  • Dataset DOI: To be added following official publication.
  • Suggested Citation: Debarchana Ghosh, Sabina Bhandari, and Cheryl Knott. A Measure for Place-Based Structural Racism and Discrimination Over Time: Version 1.0 SRD Index. 2025.