NAICS PSC rankings
Top PSC paths for NAICS 561611.
Use this ranking when the research starts with NAICS 561611 and you want the strongest service-code pages attached to Investigation and Personal Background Check Services before moving into deeper intersections.
NAICS PSC rankings
Top PSC paths
These NAICS-scoped rankings are useful when you want a cleaner entry point than the full code page and a faster pivot into geography or service-lane research.
PSC R422
2 visible recipients · SUPPORT- PROFESSIONAL: MARKET RESEARCH/PUBLIC OPINION
PSC R615
3 visible recipients · SUPPORT- ADMINISTRATIVE: BACKGROUND INVESTIGATION
PSC R499
5 visible recipients · SUPPORT- PROFESSIONAL: OTHER
PSC R799
2 visible recipients · SUPPORT- MANAGEMENT: OTHER
PSC D399
1 visible recipients · IT AND TELECOM- OTHER IT AND TELECOMMUNICATIONS
PSC R425
2 visible recipients · SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL
PSC AC12
1 visible recipients · NATIONAL DEFENSE R&D SERVICES; DEPARTMENT OF DEFENSE - MILITARY; APPLIED RESEARCH
PSC S206
1 visible recipients · HOUSEKEEPING- GUARD
PSC R605
1 visible recipients · SUPPORT- ADMINISTRATIVE: LIBRARY
PSC U008
1 visible recipients · EDUCATION/TRAINING- TRAINING/CURRICULUM DEVELOPMENT
PSC R408
1 visible recipients · SUPPORT- PROFESSIONAL: PROGRAM MANAGEMENT/SUPPORT
PSC DA01
1 visible recipients · IT AND TELECOM - BUSINESS APPLICATION/APPLICATION DEVELOPMENT SUPPORT SERVICES (LABOR)
PSC R423
1 visible recipients · SUPPORT- PROFESSIONAL: INTELLIGENCE
PSC R430
1 visible recipients · SUPPORT- PROFESSIONAL: PHYSICAL SECURITY AND BADGING
PSC U009
1 visible recipients · EDUCATION/TRAINING- GENERAL
PSC B546
1 visible recipients · SPECIAL STUDIES/ANALYSIS- SECURITY (PHYSICAL/PERSONAL)
PSC R706
1 visible recipients · SUPPORT- MANAGEMENT: LOGISTICS SUPPORT
PSC R699
2 visible recipients · SUPPORT- ADMINISTRATIVE: OTHER
PSC R420
1 visible recipients · SUPPORT- PROFESSIONAL: CERTIFICATIONS AND ACCREDITATIONS (OTHER THAN EDUC OR INFO TECH C&A)
PSC J010
1 visible recipients · MAINT/REPAIR/REBUILD OF EQUIPMENT- WEAPONS
Other NAICS ranking views
Move around NAICS 561611
Use sibling ranking layers when you want to stay inside the same industry lane but switch between geography and service-code analysis.
Directory graph
Move into full directory hubs
Use the NAICS-specific ranking page as a shortcut, then move back into the broader NAICS, state, PSC, and top-list hubs when you want wider browse coverage.