Download LTDB Files
Please note: The program code and crosswalk files may be updated based on comments and suggestions from users.It would be wise to check for updates before finalizing analyses based on the LTDB.
Please provide your email address here:
Please check all of the following boxes to indicate that you have read about the limitations on use of the data and programming code and you agree to abide by the conditions of use.
Data must not be redistributed without authorization.
Commercial use and redistribution of the microdata is strictly prohibited.
Scholarly publications are permitted.
The reference for technical documentation is Logan, John R., Zengwang Xu, and Brian Stults. 2014. "Interpolating US Decennial Census Tract Data from as Early as 1970 to 2010: A Longitudinal Tract Database"
The Professional Geographer 66(3): 412–420.
©Spatial Structures in Social Sciences, Brown University