top of page



  • ​"New Area- and Population-based Geographic Crosswalks for U.S. Counties and Congressional Districts, 1790-2020" (with Andreas Ferrara and Liyang Zhou).

    • ​County-to-county and county-to-CD crosswalks, 1790-2020: DOI.

    • Teaching material for geographic crosswalks: DOI.


Replication files

  • For raw data and code, see my research page.

Other resources

  • Economics career and internship resource (designed for Tulane undergraduates).

 © 2023 Patrick A. Testa.

bottom of page