The Census’s Longitudinal Employer-Household Dynamics (LEHD) program contains several datasets, one of which is the Origin-Destination Employment Statistics (LODES) dataset. This dataset further contains three parts:

These three pieces together provide information on commuting patterns by 2-digit industry between census tracts.

Lightcast uses them together to form the basis of Occupation by Residence data. Lightcast also uses Workplace Area Characteristics (WAC) to help build the commuting data used in Lightcast’s Input-Output model.

Source: Census Bureau