- Coast and Geodetic Survey1,982
- Interstate Commerce Commission1,745
- Justice Department1,580
- Public Health Service1,480
- Foreign Commerce Bureau1,462
- Foreign and Domestic Commerce Bureau1,411
- Education Office1,310
- Agricultural Research Service1,250
- Civil Aeronautics Administration1,210
- Weather Bureau1,119
- Civil Aeronautics Board1,040
- National Park Service1,008
- National Bureau of Standards995
- Production and Marketing Administration993
- Hydrographic Office (Navy)987
- Federal Power Commission972
- Federal Reserve System Board of Governors970
- Engineers Corps (Army)945
- Agricultural Economics Bureau911
- Naval Research Office829