Replica Megaregions Fact Sheet

Replica produces a seasonal, high-fidelity simulation that accurately represents the population and its travel patterns for the whole country. The output of each simulation is a complete, disaggregate trip and population table for a typical weekday and typical weekend day for a given season and region. Replica’s seasonal tables are delivered at a “megaregion” scale, most of which cover geographies that include between 10 million and 50 million residents.

Megaregion Stats

The data below is based on a typical weekday for the Spring 2023 season.

MegaregionCoveragePopulation
Cal-NevCA, NV~44m
Great LakesIL, IN, KY, MI, OH, WI~53m
HawaiiHI~2m
Mid-AtlanticDC, MD, NC, VA, WV~28m
North AtlanticCT, DE, NJ, NY, PA~48m
North CentralIA, KS, MN, MO, ND, NE, SD~22m
NortheastMA, ME, NH, RI, VT~12m
NorthwestID, MT, OR, WA, WY~16m
South AtlanticFL, GA, SC~38m
South CentralAL, AR, LA, MS, TN~23m
SouthwestAZ, CO, NM, OK, TX, UT~52m