This is a great way to acquire (free) data on workers-at-block (block group, tract, county, state) of residence and of workplace. The user can then link the data with census GIS files using the R program “tigris” and map and display all sorts of data.
The LEHD/LODES data also has origin-destination “flows” (block-to-block, block group-to-block group, tract-to-tract, county-to-county, state-to-state).
My r script for using tidycensus to map population density (Census 2020, PL 94-171) for the Bay Area and San Francisco City is here:
The “lehdr” ( pronounced “lee-ter”) package is used to download and format data from the Census Bureau’s LEHD / LODES program.
## LED = Local Employment Dynamics
## LEHD = Longitudinal Employer Household Dynamics Program
## LODES = LEHD Origin-Destination Employment Statistics
## UI = Unemployment Insurance
## QCEW = Quarterly Census of Employment and Wages
## RAC = Residence Area Characteristics
## WAC = Workplace Area Characteristics
## CES = Center for Economic Studies, US Bureau of the Census
Documentation on LEHD/LODES is available from the Census Bureau here:
Also of interest to MPOs and State DOTs will be the NCHRP report published 12 years ago (September 2011):
“Improving Employment Data for Transportation Planning”
Hope this is of interest!
Chuck Purvis
Hayward, California
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