IT & computer services in O Fallon, IL
7 it & computer services listed in O Fallon, Illinois. 7 with a phone number and 6 with a website.
O Fallon accounts for 0.2% of the it & computer services listed in Illinois.
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Quick answer
O Fallon, IL has 7 it & computer services listed on USA Business Search. 7 list a phone number and 6 list a website. The most listings are in ZIP codes 62269.
Updated October 2026Sun Infrared Technologies
Ellegent Systems
Cybercents, A By Light Offering
Eagle Technology Group
Sniperdyne Systems
Gate Way Solutions
How to choose an IT company in O Fallon
- Ask who will actually do the work and how often you'll hear from them.
- Get the scope, price and timeline in writing.
- Ask for two references from clients like you.
Check the business: confirm a company's registration with the state in our Illinois business lookup guide, and licensed trades in the contractor license lookup guide.
Common questions
How many it & computer services are listed in O Fallon, Illinois?
USA Business Search shows 7 it & computer services in O Fallon. 7 list a phone number and 6 list a website.
Which ZIP codes do these listings cover?
They include ZIP codes 62269.
How do I choose an IT company in O Fallon?
Ask who will actually do the work and how often you'll hear from them. Get the scope, price and timeline in writing. Ask for two references from clients like you. Check the license or registration through the Illinois business lookup guide.
How do I add or fix a listing?
Listings are free. Use Add your business, or the Claim or fix link on any listing.
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