NAICS PSC rankings
Top PSC paths for NAICS 561621.
Use this ranking when the research starts with NAICS 561621 and you want the strongest service-code pages attached to Security Systems Services (except Locksmiths) 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 S206
9 visible recipients · HOUSEKEEPING- GUARD
PSC R499
11 visible recipients · SUPPORT- PROFESSIONAL: OTHER
PSC Y1AA
2 visible recipients · CONSTRUCTION OF OFFICE BUILDINGS
PSC N059
4 visible recipients · INSTALLATION OF EQUIPMENT- ELECTRICAL AND ELECTRONIC EQUIPMENT COMPONENTS
PSC R430
9 visible recipients · SUPPORT- PROFESSIONAL: PHYSICAL SECURITY AND BADGING
PSC J059
2 visible recipients · MAINT/REPAIR/REBUILD OF EQUIPMENT- ELECTRICAL AND ELECTRONIC EQUIPMENT COMPONENTS
PSC J058
3 visible recipients · MAINT/REPAIR/REBUILD OF EQUIPMENT- COMMUNICATION, DETECTION, AND COHERENT RADIATION EQUIPMENT
PSC R425
4 visible recipients · SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL
PSC R408
3 visible recipients · SUPPORT- PROFESSIONAL: PROGRAM MANAGEMENT/SUPPORT
PSC Y1PZ
2 visible recipients · CONSTRUCTION OF OTHER NON-BUILDING FACILITIES
PSC C1AA
2 visible recipients · ARCHITECT AND ENGINEERING- CONSTRUCTION: OFFICE BUILDINGS
PSC Y1JZ
1 visible recipients · CONSTRUCTION OF MISCELLANEOUS BUILDINGS
PSC R604
1 visible recipients · SUPPORT- ADMINISTRATIVE: MAILING/DISTRIBUTION
PSC N063
3 visible recipients · INSTALLATION OF EQUIPMENT- ALARM, SIGNAL, AND SECURITY DETECTION SYSTEMS
PSC R799
3 visible recipients · SUPPORT- MANAGEMENT: OTHER
PSC 6350
3 visible recipients · MISCELLANEOUS ALARM, SIGNAL, AND SECURITY DETECTION SYSTEMS
PSC S216
3 visible recipients · HOUSEKEEPING- FACILITIES OPERATIONS SUPPORT
PSC C215
1 visible recipients · ARCHITECT AND ENGINEERING- GENERAL: PRODUCTION ENGINEERING
PSC J063
6 visible recipients · MAINT/REPAIR/REBUILD OF EQUIPMENT- ALARM, SIGNAL, AND SECURITY DETECTION SYSTEMS
PSC S202
1 visible recipients · HOUSEKEEPING- FIRE PROTECTION
PSC R699
3 visible recipients · SUPPORT- ADMINISTRATIVE: OTHER
PSC Z2KZ
1 visible recipients · REPAIR OR ALTERATION OF OTHER CONSERVATION AND DEVELOPMENT FACILITIES
PSC AD25
1 visible recipients · R&D- DEFENSE OTHER: SERVICES (OPERATIONAL SYSTEMS DEVELOPMENT)
PSC V127
1 visible recipients · TRANSPORTATION/TRAVEL/RELOCATION- TRANSPORTATION: SECURITY VEHICLE
PSC Y199
1 visible recipients · CONSTRUCT/MISC BLDGS
PSC B546
2 visible recipients · SPECIAL STUDIES/ANALYSIS- SECURITY (PHYSICAL/PERSONAL)
PSC Z1DA
1 visible recipients · MAINTENANCE OF HOSPITALS AND INFIRMARIES
PSC 7630
1 visible recipients · NEWSPAPERS AND PERIODICALS
PSC D399
1 visible recipients · IT AND TELECOM- OTHER IT AND TELECOMMUNICATIONS
PSC R615
1 visible recipients · SUPPORT- ADMINISTRATIVE: BACKGROUND INVESTIGATION
PSC R706
2 visible recipients · SUPPORT- MANAGEMENT: LOGISTICS SUPPORT
PSC AC23
1 visible recipients · NATIONAL DEFENSE R&D SERVICES; ATOMIC ENERGY DEFENSE ACTIVITIES; EXPERIMENTAL DEVELOPMENT
PSC S211
1 visible recipients · HOUSEKEEPING- SURVEILLANCE
PSC S201
1 visible recipients · HOUSEKEEPING- CUSTODIAL JANITORIAL
PSC 5895
1 visible recipients · MISCELLANEOUS COMMUNICATION EQUIPMENT
PSC Z1AZ
1 visible recipients · MAINTENANCE OF OTHER ADMINISTRATIVE FACILITIES AND SERVICE BUILDINGS
PSC D302
1 visible recipients · IT AND TELECOM- SYSTEMS DEVELOPMENT
PSC M1GZ
2 visible recipients · OPERATION OF OTHER WAREHOUSE BUILDINGS
PSC D304
1 visible recipients · IT AND TELECOM- TELECOMMUNICATIONS AND TRANSMISSION
PSC 9905
1 visible recipients · SIGNS, ADVERTISING DISPLAYS, AND IDENTIFICATION PLATES
PSC C214
1 visible recipients · ARCHITECT AND ENGINEERING- GENERAL: MANAGEMENT ENGINEERING
PSC 5999
2 visible recipients · MISCELLANEOUS ELECTRICAL AND ELECTRONIC COMPONENTS
PSC 7110
1 visible recipients · OFFICE FURNITURE
PSC 4120
1 visible recipients · AIR CONDITIONING EQUIPMENT
PSC Z111
1 visible recipients · MAINT-REP-ALT/OFFICE BLDGS
PSC Z1AA
1 visible recipients · MAINTENANCE OF OFFICE BUILDINGS
Other NAICS ranking views
Move around NAICS 561621
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.