Dominicans and Mexicans   Dominicans number at  in the state with about  of that being in the city of Philadelphia   about  compare  Dominicans to about  mexicans Dominicans are obviously the larger group by acouple thousand some sources httparticlesphillycomnewsdominicanrepublicdominicanpopulationdominicanpeople and httpwwwmigrationpolicyorg pubsMPIReportDominicanPopUSpdf