303rd Engineering Group LLC
Construction · St. Louis, Missouri
Products & Services
About 303rd Engineering Group LLC
303rd Engineering Group is an electrical/mechanical engineering design firm in St. Louis, Missouri. 303rd Engineering Group LLC is a company based in St. Louis, Missouri, United States, operating in Industrial construction, employing 6-10 people, reporting $1M-$5M in annual revenue and classified under Engineering Services.
Its primary NAICS classification is 541330 (Engineering Services). 303rd Engineering Group LLC is one of 4,474 Construction companies listed in Missouri.
Business Contact Information
- Phone
- +1 (314) 6643382
- Website
- www.303engineering.com
- Address
- 1935 Arsenal St, St. Louis, Missouri, 63118, United States
Industry & Classification
- Industry
- Construction
- Sector
- Construction
- Segment
- Industrial construction
NAICS Codes
- 54Professional, Scientific, and Technical Services
- 5413Architectural, Engineering, and Related Services
- 541330Engineering Services
SIC Codes
- 87Engineering, Accounting, Research, Management, And Related Services
- 871Engineering, Architectural, And Surveying
- 8711Engineering Services
Company Details
- Employees
- 9 (6-10)
- Annual Revenue
- $1.4M ($1M-$5M)
303rd Engineering Group LLC: frequently asked questions
What does 303rd Engineering Group LLC do?
303rd Engineering Group is an electrical/mechanical engineering design firm in St. Louis, Missouri. 303rd Engineering Group LLC is a company based in St.
Where is 303rd Engineering Group LLC located?
303rd Engineering Group LLC is headquartered at 1935 Arsenal St, St. Louis, Missouri, 63118, United States.
How many employees does 303rd Engineering Group LLC have?
303rd Engineering Group LLC has about 9 employees (the 6-10 range).
What is 303rd Engineering Group LLC's annual revenue?
303rd Engineering Group LLC's annual revenue is estimated at $1.4M (the $1M-$5M range).
What industry is 303rd Engineering Group LLC in?
303rd Engineering Group LLC is in the Construction / Construction industry, and its primary NAICS code is 541330 (Engineering Services).
How can I contact 303rd Engineering Group LLC?
Its website is www.303engineering.com and its phone number is +1 (314) 6643382.
What companies are similar to 303rd Engineering Group LLC?
Other large construction companies in Missouri include Quanta Services Inc, JE Dunn Construction Co, ARCO Construction Co and Burns & McDonnell.
Largest construction companies in Missouri
Largest companies in Missouri
Largest construction companies
Manufacturing sales in Missouri, 2026
In Missouri, Factur's 2026 study counted 29 manufacturing quotes worth $962K and 9 purchase orders over 12 months: 31% of quotes became orders, against 21% nationally. See the Missouri data.
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