- Monthly Module Adjusted Data Release (National Transit Database),
- FY 16 Apportionment Table 3 (Federal Transit Administration)
- Commutung Characteristics by Sex, 2011-2015 American Community Survey 5-Year Estimates
- Updated Urban Sprawl Data for the United State, National Cancer Institute (Dr. Reid Ewing),
- Measuring Sprawl 2014, Smart Growth America
Interactive Maps in this website were made with Mapbox
Shapefile: TIGER, US Census