Public Administration

Public Administration (NAICS 92) covers every federal, state, and local government entity exercising legislative, judicial, executive, or regulatory authority. Unlike every other NAICS sector, classification here depends not on what an organization produces but on the governmental power it wields. The sector spans from the White House and Congress to county assessors' offices and municipal water districts, making it the broadest functional category in the classification system.

Federal civilian employment is administered through the Office of Personnel Management (OPM) under Title 5 of the U.S. Code, which governs the General Schedule (GS) pay system, merit-based hiring, and veterans' preference rules. The Department of Defense alone accounts for the largest single-agency workforce, combining active-duty military with a civilian employee base spread across installations in every state, with major concentrations in Virginia, Texas, California, and the National Capital Region. State and local governments collectively employ far more workers than the federal government — roughly five times as many — with education-adjacent roles, law enforcement, and corrections representing the largest occupational clusters.

Procurement is a defining feature of how this sector intersects with the private economy. The Federal Acquisition Regulation (FAR) governs contracting for goods and services across federal agencies, with the General Services Administration (GSA) operating government-wide contract vehicles. Annual federal contract obligations run through agencies like the Department of Defense, Department of Health and Human Services, and Department of Energy, concentrated among prime contractors in the Washington, D.C. metropolitan area. State and local procurement follows separate statutory frameworks but increasingly mirrors federal practices in competitive bidding requirements and small-business set-asides.