Asians comprise about 14% of the estimated 11 million undocumented immigrants in the United States. Moreover, from 2000 to 2013, undocumented immigration from Asia increased by 202%, while undocumented immigration from Mexico increased by 29%. But despite their rising numbers, little is known about Asian undocumented immigrants. Social demographer Annie Ro, in consultation with sociologist Jennifer Van Hook, will validate imputation methods for identifying the undocumented Asian population and explore their demographic characteristics using data from the Survey of Income and Program Participation (SIPP). They will focus on Asian adults in California across the 2001, 2004 and 2008 panels, which included migration status.