Census Transportation and Population Data
The American Community Survey (ACS) is a companion survey to the decennial census, which helps to identify trends in demographics between census years through surveys of a sample of American residents. LODES data uses Unemployment Insurance earnings data, Quarterly Census of Employment and Wages (QCEW) provided by state governments along with ACS data to create statistics and spatial information on employment, jobs, and job commute flow. ACS Commuter data indicates where people work, when their trip starts, how they get there, and how long it takes. CTPP data are a special spatial tabulation of this same data that describes worker demographics, residences, workplaces and flows from the home to work at a more granular level.
Data Format:
All datasets are provided in both Esri file geodatabase format and as a comma separated value (CSV) file. Geodatabases can be opened in GIS software and CSVs can be opened in Excel.
Update Frequency:
The Census Bureau releases updated survey data annually. The datasets used here reflect the 2023 release.
Data Timeframe:
ACS data are based on 5-Year survey results, which aggregate survey responses over the five year period prior to release.
Data Access: Public
Access the data through the following links at either the County, Census Tract, or Census Block level.
Data Dictionary or Metadata:
Use table links above to access metadata specific to various datasets.