During the study period, the total undercustody population increased by 56.2 percent, with males increasing by 53.1 percent and females by 156.8 percent. Over the same period, the Hispanic inmate population increased by 78.7 percent, with Hispanic males increasing by 73.5 percent and Hispanic females by 293.7 percent. The native-born Hispanic population grew by 69.2 percent, or 23.1 percent faster than the general population; the foreign-born Hispanic population increased by 123.8 percent. Hispanics born in New York State were the fastest growing population segment in the U.S. by the close of 1990. The primary source of growth for the undercustody foreign-born Hispanic population was the increase in prisoners from Colombia and the Dominican Republic. 3 tables and 9 appendixes