NAICS 541990 · Illinois
All Other Professional, Scientific, and Technical Services Business Names in Illinois
Illinois has 1,170 all other professional, scientific, and technical services locations, ranking #5 of 51 states and D.C. and making up 5.1% of the U.S. total.
Name ideas for a Illinois all other professional, scientific, and technical services business
Before you commit, search the Illinois business entity database (linked below) to make sure the name is not already registered there.
All Other Professional, Scientific, and Technical Services in Illinois by the numbers
Locations by number of employees in Illinois
Source: U.S. Census Bureau, County Business Patterns 2022. Counts cover employer establishments (businesses with paid employees); self-employed owners without staff are not included. Small establishments with 1–4 employees include those that reported no paid employees in mid-March.
Register your business name in Illinois
In most states you check name availability and form an LLC or corporation through the Secretary of State (or equivalent) office, then register with the state tax and labor agencies if you will collect sales tax or hire employees. Official Illinois links:
- Registration, Licenses, and Permits
- Secretary of State
- Illinois Department of Revenue - Businesses
- Department of Employment Security
- Illinois state website
- Illinois - Business
- Step-by-Step Guide to Starting a Business in Illinois
- Illinois Department of Commerce and Economic Opportunity
- New Hire Registry
- Small Business Administration - Illinois
- State Agency List
- Selling to the State of Illinois
- Illinois Compiled Statutes
Official state agency links as listed by the IRS on its Illinois state links page. Filing fees and steps change, so confirm current requirements with the agency before you file.
Other states for all other professional, scientific, and technical services
See the national all other professional, scientific, and technical services page → · Top industries in Illinois →