NAICS 561621 — Security Systems Services (except Locksmiths)

Source:SAM.gov public entity dataLast refreshed: Jul 28, 2026

This NAICS hub is still accumulating vendors and may not yet meet full directory indexing thresholds.

Market snapshot

2 vendors currently indexed for this NAICS code in the GovVendorFinder directory. Counts reflect normalized public records and may be incomplete or delayed.

Vendor count

Related codes

—

Code version

2022

Federal vendors

SERCO INC

SAM: unknown

Primary NAICS

541330

Public awards

Total obligations

$1,075,228,040

Recent activity

active prior 12 months

Source: government-derived public data · Not a government endorsement

SERCO INC

HERNDON, VA

SAM: unknown

Primary NAICS

541330

Public awards

1,094

Total obligations

$1,072,280,358

Recent activity

active prior 12 months

Source: government-derived public data · Not a government endorsement

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FAQ

What is NAICS 561621? Security Systems Services (except Locksmiths)

Is this an official government certification? No. GovVendorFinder is an independent private platform. Appearance under a NAICS code does not guarantee eligibility for set-asides or awards.

How many federal vendors are indexed for NAICS 561621? GovVendorFinder currently indexes 2 vendors associated with NAICS 561621. Counts may be incomplete or delayed.