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Products & Services
About OneFirst
Transform your law firm's online image with a OneFirst website! Get a professional legal website that attracts clients. Contact us today. OneFirst is listed as a company employing 21-50 people, reporting $1M-$5M in annual revenue, classified under Custom Computer Programming Services, based in Port Washington, New York, United States and operating in Office service.
Its primary NAICS classification is 541511 (Custom Computer Programming Services). OneFirst is one of 1,507,691 Industrial & mechanical companies listed in New York.
Business Contact Information
- Phone
- +1 (877) 2690076
- Website
- onefirstlegal.com
- Address
- 15 Harbor Park Dr, Port Washington, New York, 11050, United States
Industry & Classification
- Industry
- Industrial & mechanical
- Sector
- Commercial services
- Segment
- Office service
NAICS Codes
- 54Professional, Scientific, and Technical Services
- 5415Computer Systems Design and Related Services
- 541511Custom Computer Programming Services
SIC Codes
- 73Business Services
- 737Computer Programming, Data Processing, And Other Computer Related Services
- 7371Custom Computer Programming Services
Company Details
- Employees
- 21 (21-50)
- Annual Revenue
- $3.5M ($1M-$5M)
OneFirst: frequently asked questions
What does OneFirst do?
Transform your law firm's online image with a OneFirst website! Get a professional legal website that attracts clients. Contact us today.
Where is OneFirst located?
OneFirst is headquartered at 15 Harbor Park Dr, Port Washington, New York, 11050, United States.
How many employees does OneFirst have?
OneFirst has about 21 employees (the 21-50 range).
What is OneFirst's annual revenue?
OneFirst's annual revenue is estimated at $3.5M (the $1M-$5M range).
What industry is OneFirst in?
OneFirst is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 541511 (Custom Computer Programming Services).
How can I contact OneFirst?
Its website is onefirstlegal.com and its phone number is +1 (877) 2690076.
What companies are similar to OneFirst?
Other large industrial & mechanical companies in New York include New York State, New York State Department of Health, City of New York and International Business Machines Corp.
Largest industrial & mechanical companies in New York
Largest companies in New York
Largest industrial & mechanical companies
Manufacturing sales in New York, 2026
In New York, Factur's 2026 study counted 53 manufacturing quotes worth $5M and 8 purchase orders over 12 months: 15% of quotes became orders, against 21% nationally. See the New York data.
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