Located within the Department of Homeland Security's Office of Strategy, Policy, and Plans and focused on data collection and analysis, the Office of Immigration Statistics (OIS) is positioned to gather information from across the department and the entire federal government and to perform these centralizing analytic and dissemination functions.
The Yearbook of Immigration Statistics is a compendium of tables that provides data on foreign nationals who, during a fiscal year, were granted lawful permanent residence (i.e., admitted as immigrants or became legal permanent residents), were admitted into the United States on a temporary basis (e.g., tourists, students, or workers), applied for asylum or refugee status, or were naturalized.
The Yearbook also presents data on immigration enforcement actions, including alien apprehensions, removals, and returns.
[4] The Office of Immigration Statistics (OIS) annual Immigration Enforcement Actions reports contain information obtained from CBP and ICE case records and processed by OIS to describe the number and characteristics of foreign nationals found inadmissible, apprehended, arrested, detained, returned, or removed during a given fiscal year.
Current series include population estimates for unauthorized immigrants, nonimmigrants, and lawful permanent residents.