A breakdown of the 5.3K+ companies running Deltek.
Top industries
Construction and building2K+
Professional and business services1K+
Information technology and services770
Industrial and manufacturing360
Financial services217
Government and public services154
Education and training121
Not for profit95
No industry recorded: 148
Company size
1–10286 (6%)
11–50733 (14%)
51–2502,087 (40%)
251–500963 (19%)
501–1,000356 (7%)
1,001–5,000457 (9%)
5,001–10,00095 (2%)
10,001+184 (4%)
Share of companies with a recorded size, by employees.
No size recorded: 185
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Frequently asked questions
About the Deltek data on this page.
How many companies use Deltek?
Firmable holds confirmed Deltek detections for 5,346 distinct companies, 1,395 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Deltek?
Cotter Consulting, Inc. (now Consertus), MORRIS Architects | A Huitt-Zollars Company and AEVEX Aerospace are among the most prominent in the current set.
What industries use Deltek?
Construction and building, professional and business services and information technology and services lead the set, across 19 industries in total.
What size companies use Deltek?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are Deltek users based?
The United States, Canada, Australia and Indonesia account for most detections, across 13 countries.
How current is this data?
1,395 companies were confirmed in the last 90 days. Last detection 13 October 2026.
