The company said the deal covers so-called biometric-capture services, such as fingerprint and signature collection, in support of U.S. citizenship applications and green-card renewals.
Northrop said the deal is worth $357 million over one year and has a potential value of $750 million over a five-year period.
Biometric-capture services involve electronic scanning and recording of fingerprints, and photograph and signature collection for identification purposes. The contract work will be performed in all 50 U.S. states at 136 application support centers, with possible future expansion overseas. Northrop Grumman has provided these services since 1999.