Day & Zimmermann Government Services LLC

Company facts

FY2025 rankings

Its parent company, The Day & Zimmermann Group, Inc., ranks:

• #4 in PSC 1375
• #26 in PSC 1055
• #37 in NAICS 32592
• #59 in PSC 5342
• #80 in NAICS 3259

Self-certified in SAM.gov

• For Profit Organization

Entity structure

Corporate Entity (Not Tax Exempt)

Other NAICS codes in SAM.gov

• 236210 Industrial Building Construction
• 236220 Commercial and Institutional Building Construction
• 237110 Water and Sewer Line and Related Structures Construction
• 237130 Power and Communication Line and Related Structures Construction
• 237310 Highway, Street, and Bridge Construction
• 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing
• 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
• 488119 Other Airport Operations

Show all 38

• 488190 Other Support Activities for Air Transportation
• 488490 Other Support Activities for Road Transportation
• 488991 Packing and Crating
• 488999 All Other Support Activities for Transportation
• 493110 General Warehousing and Storage
• 493190 Other Warehousing and Storage
• 541330 Engineering Services
• 541511 Custom Computer Programming Services
• 541512 Computer Systems Design Services
• 541513 Computer Facilities Management Services
• 541519 Other Computer Related Services
• 541611 Administrative Management and General Management Consulting Services
• 541614 Process, Physical Distribution, and Logistics Consulting Services
• 541690 Other Scientific and Technical Consulting Services
• 541713 Research and Development in Nanotechnology
• 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
• 541990 All Other Professional, Scientific, and Technical Services
• 561210 Facilities Support Services
• 561320 Temporary Help Services
• 561499 All Other Business Support Services
• 561613 Armored Car Services
• 561621 Security Systems Services (except Locksmiths)
• 561990 All Other Support Services
• 611430 Professional and Management Development Training
• 611519 Other Technical and Trade Schools
• 611692 Automobile Driving Schools
• 611699 All Other Miscellaneous Schools and Instruction
• 611710 Educational Support Services
• 624230 Emergency and Other Relief Services
• 812910 Pet Care (except Veterinary) Services

Corporate family

• The Day & Zimmermann Group, Inc. Parent Philadelphia, PA JV1NFDGGB4S4
  • Day & Zimmermann Government Services LLC

SAM.gov registration date

Sep 24, 2026

Physical address

1835 Market Street, 1835 Market St #2900, Philadelphia, PA 19103, USA

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated Oct 28, 2026.