| NGNorthrop Grumman--epic One Aviation Way | Madison | AL | — | ◇ UNVERIFIED |
| NGNorthrop Grumman | Mesa | AZ | — | ◇ UNVERIFIED |
| NGNorthrop Grumman | Azusa | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman CORP Aircraf | Compton | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP. | El Segundo | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman | Goleta | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman CORP | Hawthorne | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Corporation | Hawthorne | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman | Lancaster | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems | Manhattan Beach | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Aerospace Systems | Manhattan Beach | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Mojave Hanger 71 | Mojave | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP. | Mojave | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Newbury Park | Newbury Park | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman CORP Aircraft Integration Center | Palmdale | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Site 7 | Palmdale | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Redondo Beach | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Aerospace System | Redondo Beach | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems | Redondo Beach | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman S&msc | Redondo Beach | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Aerospace Systems | Redondo Beach | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Mission System | San Diego | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | San Diego | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | San Jose | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corpo | San Jose | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corp-sperry Marine | Signal Hill | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP | Woodland Hills | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Apopka | FL | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Melbourne | FL | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Saint Augustine | FL | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Corporations Warner Robins Ga | Warner Robins | GA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP | Arlington Heights | IL | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP | Palatine | IL | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP | Rolling Meadows | IL | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP | Rolling Meadows | IL | — | ◇ UNVERIFIED |
| NGNorthrop Grumman | Topeka | KS | — | ◇ UNVERIFIED |
| NGNorthrop Grumman CORP | Lake Charles | LA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman | Devens | MA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Beltsville | MD | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation- Troy Hill 2 (ste 2a) | Elkridge | MD | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Sys CORP | Gaithersburg | MD | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Corporation | Hanover | MD | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP | Hanover | MD | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP. - Bwi | Linthicum | MD | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Linthicum | MD | — | ◇ UNVERIFIED |
| NSNorthrop-grumman Systems CORP. - Atl | Linthicum | MD | — | ◇ UNVERIFIED |
| NGNorthrop Grumman | Independence | MO | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Guidance & Electronics CO INC | Springfield | MO | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Space Technology Synopt | Charlotte | NC | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation - Emerado | Emerado | ND | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP | Bethpage | NY | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Bethpage | NY | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Poly Scientific | Springfield | PA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems | Brigham City | UT | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation - ASBU Clearfield | Clearfield | UT | 500+ | ◐ LIKELY ACTIVE |
| NGNorthrop Grumman Systems Corporation - Clearfield, G13 | Clearfield | UT | — | ◇ UNVERIFIED |
| NGNorthrop Grumman | Clearfield | UT | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation - Layton | Layton | UT | 100–499 | ◐ LIKELY ACTIVE |
| NGNorthrop Grumman Systems Corporation - Promontory | Promontory | UT | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation - Copper Crossing | Salt Lake City | UT | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation Bacchus Facility Building 2440 | West Valley City | UT | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Corporation | Falls Church | VA | — | ◐ LIKELY ACTIVE |
| NGNorthrop Grumman Systems CORP - Space Superiority Division | Sterling | VA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Waynesboro | VA | — | ◇ UNVERIFIED |
