According to a Pew Hispanic Center report, in 2004, 57% of illegal immigrants were from Mexico; 24% were from other Latin American countries, primarily from Central America; 9% were from Asia; 6% were from Europe and Canada; and 3% were from Africa and the rest of the world.
Según un informe del Pew Research Center, en el 2005, el 57% de los inmigrantes ilegales provenían de México; el 21% provenía de otros países latinoamericanos, principalmente de América Central; el 13% de Asia; el 6% de Europa y Canadá; y el 3% de África y el resto del mundo.