 The official figure for foreign-born residents in Mexico in 2000 was 493,000, with a majority (86.9%) of these born in the United States (except Chiapas, where the majority of immigrants are from Central America).The six states with the most immigrants are Baja California (12.1% of total immigrants), Mexico City (11.4%), Jalisco (9.9%), Chihuahua (9%) and Tamaulipas (7.3%).The national net migration rate of Mexico is negative, estimated at -1.8 migrants per 1,000 population .