IT & computer services in Ontario, CA
62 iT & computer services listed in Ontario, California. 62 with a phone number and 53 with a website.
Ontario accounts for 0% of the iT & computer services listed in California and ranks #47 among California cities for iT & computer services.
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Quick answer
Ontario, CA has 62 iT & computer services listed on USA Business Search. 62 list a phone number and 53 list a website. The most listings are in ZIP codes 91761, 91764, 91762.
Updated October 2026Featured · From the team behind USA Business Search
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Keyway
Quadra Med Corporation
Agility Integration Corporation
Alldata Technology LLC
Resolv Consulting, Inc.
Agent Information Software
Alston Tascom Inc
AuditTEL
Avgpc
Blaster Communications
Boost mobile by 2020
Caltek Technologies
Companybuilt, Inc
Computer Technology Consultants
Computerworks Nfp Solutions
Corporate Internet
Data-tel Contractors
Digital Shop
Extreme Pos Solutions
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Ezconnect
FUN Games
Galaxy Pc
Gofba
Gst Telecommunications Inc
Home Connected
Intelesysone
Itiq Solutions
J&e Forever Inc
Knowit Inc
Laser App Software
Macomco
Metro Rf Services, Inc.
Modax
Nai Capital Wireless
One Data Center America
Ontario Datacenter
Phlebio Software
Phone repair and smart
Plug & Play Home Tech
Quadient West District - United States
Rami’s Electronic Shop
RipenApps Technologies
Sbm Technology
Secure Data Recovery Services
Shivnet Inc
Simplify Tek,
Sky Tech Worldwide
Skytech Gaming
TeleManagement Pros Inc DBA TMP Business Solutions
Tesario Computer Tech Support
Touchstone Its
Trinity Networx
Trinity Networx, LLC | Managed IT Services & Support Ontario, California
Usedeal World
Veterans Communication Services
VVD Communications
Wenzel Technologies Usa, Llc
West Coast Pos
Wheresmyjob
Wirenet Communications
Zjw Inc.
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How to choose an IT company in Ontario
- 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.
How Ontario businesses get found in Google and AI answers
- Claim and complete your Google Business Profile, then keep hours, photos and services current.
- Use the same business name, address and phone everywhere you are listed, including directories like this one.
- Publish pages that answer the questions customers actually ask, so ChatGPT, Gemini, Perplexity and Google AI Overviews can cite you.
- Add LocalBusiness schema, clear pricing and service pages so AI assistants and booking agents can read your details.
Learn more: SEO vs. AI search optimization · Get found on Google Maps and in AI answers · How to pick an SEO company
Common questions
How many iT & computer services are listed in Ontario, California?
USA Business Search shows 62 iT & computer services in Ontario. 62 list a phone number and 53 list a website.
Which ZIP codes do these listings cover?
They include ZIP codes 91761, 91764, 91762.
How do I choose an IT company in Ontario?
Ask who will actually do the work and how often you'll hear from them. Get the scope, price and timeline in writing.
How do iT & computer services in Ontario compare with the rest of California?
Ontario has 0% of the 15,112 iT & computer services listed in California, which ranks #47 among California cities for this category.
How do I add or fix a listing?
Listings are free. Use Add your business, or the Claim or fix link on any listing.
What should I ask a Ontario marketing agency before I hire them?
Ask who will actually do the work, how they track calls and forms, and what happens to your accounts if you leave. Eye To Ad Media offers a free review of how your business shows up in Google and AI answers.
What is AI search optimization (AIO or GEO)?
It is the work of making your business easy for AI assistants like ChatGPT, Gemini and Google AI Overviews to understand, trust and recommend: consistent listings, structured data, and pages that answer real customer questions. Read SEO vs. AI search optimization.
More professional services in Ontario
IT & computer services nearby
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