IT services in Portsmouth, NH: 2026 report
729 ranked entriesUpdated 7 trade lists
The 7 service lists for Portsmouth, NH hold 729 ranked entries. Cybersecurity companies have the most, with 200.
Key numbers for Portsmouth
Shares use ranked businesses as their base. An IT firm in two service lists counts in both.
729
ranked entries by IFR Score, in 7 service lists
1,515
service listings serving the city; an IT firm counts once per service
5.0
median of the services’ median Google ratings
IT services in Portsmouth, by ranked IT firms
| Service | Ranked | Serving the city | Median rating | Median reviews |
|---|---|---|---|---|
| Cybersecurity companies | 200 | 398 | 5.0 | 15 |
| Managed IT service providers | 197 | 398 | 5.0 | 12 |
| IT consultants | 138 | 338 | 5.0 | 14 |
| Business phone system providers | 67 | 133 | 4.6 | 8 |
| Data recovery services | 66 | 111 | 4.9 | 18 |
| Network cabling and installation companies | 43 | 84 | 5.0 | 14 |
| Computer repair shops | 18 | 53 | 5.0 | 13 |
Method and basis
- Serving counts are active, de-duplicated IT firms within each service’s service radius of Portsmouth, 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 Portsmouth, NH: 2026 Report”, https://www.itfirmsranked.com/reports/portsmouth-nh-it-services-2026, data as of November 9, 2026.
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