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Products & Services
About O'brien & Co
O'brien & Co is a company operating in Office service, employing 11-20 people, reporting $0M-$1M in annual revenue, classified under Offices of Certified Public Accountants and based in Farmington, Michigan, United States.
Its primary NAICS classification is 541211 (Offices of Certified Public Accountants). O'brien & Co is one of 528,309 Industrial & mechanical companies listed in Michigan.
Business Contact Information
- Address
- 24714 Madison Ct, Farmington, Michigan, 48335, United States
Industry & Classification
- Industry
- Industrial & mechanical
- Sector
- Commercial services
- Segment
- Office service
NAICS Codes
- 54Professional, Scientific, and Technical Services
- 5412Accounting, Tax Preparation, Bookkeeping, and Payroll Services
- 541211Offices of Certified Public Accountants
SIC Codes
- 87Engineering, Accounting, Research, Management, And Related Services
- 872Accounting, Auditing, And Bookkeeping Services
- 8721Offices of Certified Public Accountants
Company Details
- Employees
- 16 (11-20)
- Annual Revenue
- $475,000 ($0M-$1M)
O'brien & Co: frequently asked questions
What does O'brien & Co do?
O'brien & Co is a company operating in Office service, employing 11-20 people, reporting $0M-$1M in annual revenue, classified under Offices of Certified Public Accountants and based in Farmington, Michigan, United States.
Where is O'brien & Co located?
O'brien & Co is headquartered at 24714 Madison Ct, Farmington, Michigan, 48335, United States.
How many employees does O'brien & Co have?
O'brien & Co has about 16 employees (the 11-20 range).
What is O'brien & Co's annual revenue?
O'brien & Co's annual revenue is estimated at $475,000 (the $0M-$1M range).
What industry is O'brien & Co in?
O'brien & Co is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 541211 (Offices of Certified Public Accountants).
Largest companies in Michigan
Largest industrial & mechanical companies
Manufacturing sales in Michigan, 2026
In Michigan, Factur's 2026 study counted 81 manufacturing quotes worth $4.7M and 28 purchase orders over 12 months: 35% of quotes became orders, against 21% nationally. See the Michigan data.
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