IT services in Ontario, CA: 2026 report
3,239 ranked entriesUpdated 7 trade lists
The 7 service lists for Ontario, CA hold 3,239 ranked entries. Managed IT service providers have the most, with 827.
Key numbers for Ontario
Shares use ranked businesses as their base. An IT firm in two service lists counts in both.
3,239
ranked entries by IFR Score, in 7 service lists
6,537
service listings serving the city; an IT firm counts once per service
5.0
median of the services’ median Google ratings
IT services in Ontario, by ranked IT firms
| Service | Ranked | Serving the city | Median rating | Median reviews |
|---|---|---|---|---|
| Managed IT service providers | 827 | 1,725 | 5.0 | 13 |
| IT consultants | 624 | 1,419 | 5.0 | 12 |
| Cybersecurity companies | 521 | 1,086 | 5.0 | 13 |
| Data recovery services | 403 | 578 | 4.9 | 29 |
| Business phone system providers | 351 | 688 | 4.9 | 12 |
| Network cabling and installation companies | 328 | 592 | 5.0 | 15 |
| Computer repair shops | 185 | 449 | 4.8 | 24 |
Method and basis
- Serving counts are active, de-duplicated IT firms within each service’s service radius of Ontario, as of November 9, 2026.
- Ranked IT firms have a confident service match and 3 or more Google reviews, or a claimed profile.
- Median rating, median reviews and the shares are measured over ranked businesses.
- Figures are recalculated with each weekly data update. This page shows the latest figures for the year in its title.
Cite this report: ITFirmsRanked, “IT Services in Ontario, CA: 2026 Report”, https://www.itfirmsranked.com/reports/ontario-ca-it-services-2026, data as of November 9, 2026.
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