John Thomas Madsen
Commercial services · Grass Valley, California
Products & Services
About John Thomas Madsen
John Thomas Madsen is a company classified under All Other Business Support Services, based in Grass Valley, California, United States, operating in Office service, employing 1-5 people and reporting $0M-$1M in annual revenue.
Its primary NAICS classification is 561499 (All Other Business Support Services). John Thomas Madsen is one of 2,121,238 Industrial & mechanical companies listed in California.
Business Contact Information
- Address
- 440 Henderson St, Grass Valley, California, 95945, United States
Industry & Classification
- Industry
- Industrial & mechanical
- Sector
- Commercial services
- Segment
- Office service
NAICS Codes
- 56Administrative and Support and Waste Management and Remediation Services
- 5614Business Support Services
- 561499All Other Business Support Services
SIC Codes
- 73Business Services
- 738Miscellaneous Business Services
- 7389Convention and Trade Show Organizers
Company Details
- Employees
- 4 (1-5)
- Annual Revenue
- $161,000 ($0M-$1M)
John Thomas Madsen: frequently asked questions
What does John Thomas Madsen do?
John Thomas Madsen is a company classified under All Other Business Support Services, based in Grass Valley, California, United States, operating in Office service, employing 1-5 people and reporting $0M-$1M in annual revenue.
Where is John Thomas Madsen located?
John Thomas Madsen is headquartered at 440 Henderson St, Grass Valley, California, 95945, United States.
How many employees does John Thomas Madsen have?
John Thomas Madsen has about 4 employees (the 1-5 range).
What is John Thomas Madsen's annual revenue?
John Thomas Madsen's annual revenue is estimated at $161,000 (the $0M-$1M range).
What industry is John Thomas Madsen in?
John Thomas Madsen is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 561499 (All Other Business Support Services).
What companies are similar to John Thomas Madsen?
Other large industrial & mechanical companies in California include State of California, TD SYNNEX Corp, University of California and Ingram Micro Holding Corp.
Largest industrial & mechanical companies in California
Largest companies in California
Largest industrial & mechanical companies
Manufacturing sales in California, 2026
In California, Factur's 2026 study counted 98 manufacturing quotes worth $14.7M and 18 purchase orders over 12 months: 18% of quotes became orders, against 21% nationally. See the California data.
Own this business?
Keep your profile accurate — or ask us to take it down. We acknowledge requests within 7 days and resolve them within 30 days.
Prefer email? privacy@facturmfg.com
Add this badge to your website — show visitors you're listed on Factur Data.