Civilian Personnel Office (CPO) is located at 20 Schilling Circle Bldg 1305, Hanscom AFB, MA 01731. Civilian Personnel Office (CPO) can be reached by their main phone number at (781) 225-1401. Alternatively, you can reach Civilian Personnel Office (CPO) by phone at (781) 225-1405. You can also reach Civilian Personnel Office (CPO) by phone at (781) 225-2149. The listed DSN line is 845-1401. Visit the Civilian Personnel Office (CPO) website by clicking here.