USCIS has received and adjudicated an average of 7 million Deferred Action for Childhood Arrival petitions and applications annually. These petitions and applications typically allow foreign nationals to stay in United States as lawful permanent residents (LPR) or immigrants, to stay temporarily to work as nonimmigrants, or to obtain U.S. citizenship.
These reports provide data on various aspects of USCIS operations. In addition, certain tables list the USCIS offices responsible for the adjudication.
See the reports here: https://www.uscis.gov/tools/reports-studies/immigration-forms-data