Sources

Data Sources

• Lightcast — AI-related job postings data (2014–2023)
  
• U.S. Census Bureau
  • American Community Survey (ACS, 5‑year estimates 2013–2022) for demographics
    
  • Local Area Unemployment Statistics (LAUS, 2013–2023) for employment counts
    
  • Quarterly Workforce Indicators (QWI, 2013–2023) for labor turnover
    
  • County Business Patterns (CBP, 2013–2023) for establishment sizes & industry employment
    
• Federal Housing Finance Agency (FHFA) — House Price Index & growth rates (2013–2024)
  
• USPTO / PatentsView
  • All patents & inventor counts, by county
    
  • AI-specific patent classification (Giczy et al., 2022)
    
• Integrated Postsecondary Education Data System (IPEDS) — Bachelor’s & master’s degrees awarded per capita

Code & Reproducibility

• GitHub Repository: https://github.com/JacobKhay/AI-Share-Replication-Differences — all data‐prep, analysis, and Quarto site source
  
• Quarto Site: https://jacobkhay.github.io/AI-Share-Replication-Differences/sources.html

Software & Packages

• R (4.0+) with:
  • tidyverse, fixest, modelsummary, kableExtra
    
  • sf, leaflet, tigris, scales
    
• Quarto (Cosmo & Brand themes)