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Products & Services
About Keystone HR
Keystone HR is a full-service employment agency that will help your company manage everything from employee benefits to payroll processing. Keystone HR is listed as a company operating in Office service, employing 6-10 people, reporting $0M-$1M in annual revenue, classified under Employment Services and based in Calexico, California, United States.
Its primary NAICS classification is 561330 (Professional Employer Organizations). Keystone HR is one of 2,121,238 Industrial & mechanical companies listed in California.
Business Contact Information
- Phone
- +1 (760) 3572929
- Website
- keystonehr.biz
- Address
- 221 Campillo St, Calexico, California, 92231, United States
Industry & Classification
- Industry
- Industrial & mechanical
- Sector
- Commercial services
- Segment
- Office service
NAICS Codes
- 56Administrative and Support and Waste Management and Remediation Services
- 5613Employment Services
- 561330Professional Employer Organizations
SIC Codes
- 73Business Services
- 736Personnel Supply Services
- 7363Professional Employer Organizations
Company Details
- Employees
- 6 (6-10)
- Annual Revenue
- $964,000 ($0M-$1M)
Keystone HR: frequently asked questions
What does Keystone HR do?
Keystone HR is a full-service employment agency that will help your company manage everything from employee benefits to payroll processing.
Where is Keystone HR located?
Keystone HR is headquartered at 221 Campillo St, Calexico, California, 92231, United States.
How many employees does Keystone HR have?
Keystone HR has about 6 employees (the 6-10 range).
What is Keystone HR's annual revenue?
Keystone HR's annual revenue is estimated at $964,000 (the $0M-$1M range).
What industry is Keystone HR in?
Keystone HR is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 561330 (Professional Employer Organizations).
How can I contact Keystone HR?
Its website is keystonehr.biz and its phone number is +1 (760) 3572929.
What companies are similar to Keystone HR?
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.
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