SIC 9221 — Police Protection
SIC 9221 is 'Police Protection', a 4-digit Standard Industrial Classification (SIC) code under Major Group 92: Justice, Public Order, and Safety (Division J: Public Administration); it maps to modern 2022 NAICS code(s): 922120 (Police Protection).
Description & Classification
SIC code 9221 representing 'Police Protection' is an industry category in the Standard Industrial Classification (SIC) system under U.S. OSHA and Federal procurement registers.
Modern NAICS Crosswalk
Trace the modern equivalent classifications in the 2022 North American Industry Classification System (NAICS) database:
- NAICS 922120 - Police Protection (via SIC1987:9221→NAICS1997:92212→2002:922120→2007:922120→2012:922120→2017:922120→2022:922120)
Classification Details
| SIC Code | 9221 |
|---|---|
| Industry Title | Police Protection |
| Division | Division J: Public Administration |
| Major Group | Major Group 92: Justice, Public Order, and Safety |
| Source / Verified | US Census 1987 SIC Concordance / 2026-06-28 |
Related Resources & Compliance Guides
Further regulatory reference links for legacy SIC code 9221:
- SIC Codes Complete Compliance Guide — Detailed history and active legal applications of the SIC classification framework.
- Why Legacy SIC Codes Persist Guide — How credit systems and the SEC still rely on SIC metadata.
- SIC ↔ NAICS Crosswalk Tool — Trace industrial code conversions dynamically.
- SIC Major Group 92 Hub — View other legacy industries in this business division.
Related Industries in Major Group 92
Frequently Asked Questions (FAQ)
What industry does SIC code 9221 represent?
SIC 9221 is 'Police Protection', a 4-digit Standard Industrial Classification (SIC) code under Major Group 92: Justice, Public Order, and Safety (Division J: Public Administration); it maps to modern 2022 NAICS code(s): 922120 (Police Protection).
What is the modern 2022 NAICS mapping for SIC 9221?
SIC code 9221 maps to modern NAICS codes: 922120 - Police Protection.