22-05-2025
- Business
- Business Journals
Greater Philadelphia's Largest Engineering Firms
The 34 largest engineering firms in Greater Philadelphia employ more than 1,600 local licensed engineers in Bucks, Chester, Delaware, Montgomery and Philadelphia counties in Pennsylvania; Burlington, Camden and Gloucester counties in New Jersey; and New Castle and Kent counties in Delaware.
The online version of this ranking expands beyond what appears in print; another 49 engineering firms are included in our digital rankings, in addition to the 34 featured in this week's print edition.
This week's List is part of a shift in our research methodology and philosophy in 2025, one that will emphasize more data and context for readers while better coordinating the resources available to us and our 46 sister publications under the American City Business Journals flag. We anticipate this effort will identify thousands of new local records — and cumulatively, tens of thousands of new businesses across ACBJ's footprint — this year alone.
Information on The List was obtained through Philadelphia Business Journal research or supplied by individual firms through questionnaires that PBJ could not independently verify. In case of ties, firms are ranked by total employment and then listed alphabetically if ties remain.
Additionally, companies that did not respond to employment surveys but were still included on this year's List are sorted by estimated total employment figures derived from PBJ archives; annual filings with the U.S. Department of Labor; and other firm-specific resources. Inclusion on this year's List required each firm to have a minimum of 50 total employees, using the methodologies described above.
[The tiebreaker language in the preceding paragraph may need to be adjusted if you have a local tiebreaker (secondary sort) before moving onto the total employment tiebreaker (tertiary sort).]
For information about this and other PBJ Lists, please contact Data Reporter Todd Romero at tromero@ or 215-238-5146.
