These files are intended to provide information for replication of the analyses published in the article: Bozick, R. (2021). Age, Period, and Cohort Effects Contributing to the Great American Migration Slowdown. Demographic Research. All data extracts used in this analysis are freely available for download from the IPUMS Current Population Survey (CPS) collection: https://cps.ipums.org/cps/ Sarah Flood, Miriam King, Renae Rodgers, Steven Ruggles, J. Robert Warren and Michael Westberry. Integrated Public Use Microdata Series, Current Population Survey: Version 9.0. Minneapolis, MN: IPUMS, 2021. https://doi.org/10.18128/D030.V9.0 To replicate this analysis, all CPS-ASEC files from 1964 through 2019 need to be downloaded with three variables: year This variable indicates the year of the survey age This variable indicates the age of the sample member migrate1 This variable indicates if the sample member changed residence in the past year Once downloading all files, the analysis can be replicated using STATA version 17.0. A server might be required given the computational complexity and sample size. This zip file includes a .do file 'Migration Slowdown.do' that contains the code to produce the analysis in STATA.