William Johnston
Commercial services · Warminster, Pennsylvania
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Products & Services
About William Johnston
This profile covers William Johnston, a company operating in Office service, employing 1-5 people, reporting $0M-$1M in annual revenue, classified under All Other Business Support Services and based in Warminster, Pennsylvania, United States.
Its primary NAICS classification is 561499 (All Other Business Support Services). William Johnston is one of 784,164 Industrial & mechanical companies listed in Pennsylvania.
Business Contact Information
- Address
- 1011 Cornell Dr, Warminster, Pennsylvania, 18974, 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
- 3 (1-5)
- Annual Revenue
- $183,000 ($0M-$1M)
William Johnston: frequently asked questions
What does William Johnston do?
This profile covers William Johnston, a company operating in Office service, employing 1-5 people, reporting $0M-$1M in annual revenue, classified under All Other Business Support Services and based in Warminster, Pennsylvania, United States.
Where is William Johnston located?
William Johnston is headquartered at 1011 Cornell Dr, Warminster, Pennsylvania, 18974, United States.
How many employees does William Johnston have?
William Johnston has about 3 employees (the 1-5 range).
What is William Johnston's annual revenue?
William Johnston's annual revenue is estimated at $183,000 (the $0M-$1M range).
What industry is William Johnston in?
William Johnston is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 561499 (All Other Business Support Services).
Largest companies in Pennsylvania
Largest industrial & mechanical companies
Manufacturing sales in Pennsylvania, 2026
In Pennsylvania, Factur's 2026 study counted 44 manufacturing quotes worth $1.6M and 10 purchase orders over 12 months: 23% of quotes became orders, against 21% nationally. See the Pennsylvania data.
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