Cell towers in Castro Valley, California
The FCC register lists 6 antenna structures in and around Castro Valley. That is the 249th highest count of any place in California.
Overview
The FCC register lists 6 antenna structures in and around Castro Valley, CA. That is the 249th highest count of any place in California.
Spread over the land area here, the register works out to 0.36 structures per square mile. No population estimate is published for this place, so a per-head figure is not given.
Half the registered structures here are taller than 18 m (60 ft) and half are shorter.
At&t Mobility Spectrum LLC holds more registrations here than any other entity, at 3 of 6.
The most recent registration on file here dates from 2016.
Structure types
| Pole | 3 | 50% |
| Monopole | 2 | 33% |
| Tree | 1 | 17% |
Largest registered owners
owner is not the same as carrier| At&t Mobility Spectrum LLC Carrier | 3 | 50% |
| Cctm1 LLC Other | 1 | 17% |
| Pacific Gas & Electric Company Utility | 1 | 17% |
| Crown Castle Gt Company, LLC Tower company | 1 | 17% |
Tallest registered structures
| Height | Type | Built | Owner | ASR |
|---|---|---|---|---|
| 22 m (72 ft) | Monopole | 2013 | At&t Mobility Spectrum LLC | 2685929 |
| 21 m (70 ft) | Tree | 2013 | Cctm1 LLC | 2685672 |
| 18 m (60 ft) | Pole | 2013 | Pacific Gas & Electric Company | 2681794 |
| 18 m (60 ft) | Monopole | 2016 | At&t Mobility Spectrum LLC | 2699014 |
| 14 m (45 ft) | Pole | 2010 | At&t Mobility Spectrum LLC | 2683402 |
| 14 m (45 ft) | Pole | 1990 | Crown Castle Gt Company, LLC | 121077 |
When they were registered
| 1990s | 1 | 17% |
| 2010s | 5 | 83% |
Nearby places
- San Lorenzo 7
- San Leandro 21
- Hayward 63
- Oakland 51
- Pleasanton 12
About this data
All figures on this page are aggregated from the federal antenna structure register of 2026-08-23, not from carrier coverage data. The two answer different questions.
The FCC Antenna Structure Registration database covers structures that require registration — generally those over 200 feet or near airports. Many small cells, rooftop antennas and short towers are not registered and will not appear here.
"Owner" is the entity that registered the structure, usually a tower company such as American Tower or Crown Castle. It does not indicate which carriers operate equipment on the structure.