7 ranked servicesUpdated 0 paid placements in any rankingHow we rank
7 services have a ranked list for Castro Valley, CA. Each list ranks the IT firms that serve the city by IFR Score. The largest list by ranked IT firms is managed IT service providers, with 365.
Ranked by IFR Score among the IT firms that serve the city. Open a service for its full list.
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
365 ranked managed IT service providers serve Castro Valley.
4.5 from 441 Google reviews · 19 mi away
4.9 from 116 Google reviews · 8 mi away
5.0 from 104 Google reviews · 22 mi away
302 ranked IT consultants serve Castro Valley.
5.0 from 54 Google reviews · 16 mi away
5.0 from 87 Google reviews · 17 mi away
4.8 from 23 Google reviews · 24 mi away
285 ranked cybersecurity companies serve Castro Valley.
4.9 from 143 Google reviews · 13 mi away
4.9 from 299 Google reviews · 18 mi away
4.9 from 46 Google reviews · 8 mi away
205 ranked data recovery services serve Castro Valley.
4.8 from 1,613 Google reviews · 36 mi away
4.5 from 263 Google reviews · 5 mi away
4.9 from 65 Google reviews · 18 mi away
191 ranked computer repair shops serve Castro Valley.
4.9 from 1,090 Google reviews · 6 mi away
4.7 from 135 Google reviews · Based in Castro Valley
4.7 from 156 Google reviews · 4 mi away
167 ranked network cabling and installation companies serve Castro Valley.
5.0 from 97 Google reviews · 23 mi away
5.0 from 145 Google reviews · 24 mi away
4.8 from 32 Google reviews · 13 mi away
149 ranked business phone system providers serve Castro Valley.
4.9 from 78 Google reviews · 19 mi away
5.0 from 34 Google reviews · 18 mi away
4.8 from 32 Google reviews · 13 mi away
Each service list scores every IT firm that serves Castro Valley on the same IFR Score, from 0 to 100.
Reputation, review volume, recency, availability, service focus, proximity, claimed profile, partnered and client reviews each carry a fixed weight.
Read the full methodCastro Valley IT services report 2026All California cities
