National Directory
Engineering Firms in the USA
Browse engineering firms across the USA — civil, structural, mechanical, electrical, telecom, environmental, and industrial PE-licensed companies in every state.
Engineering services across the USA
U.S. engineering firms range from boutique structural shops sealing single-family additions to multinational design-build practices delivering airports and chip fabs. What unites them is state-by-state PE licensure — every stamped deliverable must come from an engineer licensed in the project state.
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FAQ
How many engineering firms operate in the USA?
The U.S. Census County Business Patterns reports more than 80,000 engineering services establishments (NAICS 541330) operating nationwide, employing over 1 million people.
Are engineering firms regulated at the state level?
Yes. Each state's licensing board (NCEES member boards) regulates PE licensure, firm registration, and seal requirements. Out-of-state stamps are typically not accepted.
How do I find an engineering firm in a specific state?
Use EngineerMint's state directories to filter firms by state, city, and discipline. Every listing links to verified PE board records.