County page

Cell towers in Contra Costa, CA

Local tower sites, carrier presence, and 5G-capable locations in Contra Costa.

551 Tower sites

Listed sites in this county

5 Carriers

Distinct carrier brands in the county

189 5G-capable sites

NR present on at least one tower

350 Approximate nodes

Crowdsourced equipment without a matched ASR structure

Sites on this route

Ranked tower detail pages for this browse surface, using the same utility-first layout across ZIP, state, county, carrier, and 5G pages.

Alamo, CA

ASR matched

Alamo 28.9 ASR-1002689

28.9 with 1 carrier presences. Joined to nearby OpenCelliD cells within 200 meters of the FCC structure. Closest matched cell was 185 meters away.

100-346 ALAMO SQUARE DR.

24 ft 28.9 Pamelia
T-Mobile
LTE

Alamo, CA

Crowdsourced only

Approximate cell site near Alamo, CA

Crowdsourced cell site with 1 carrier presences. Approximate OpenCelliD-only site clustered from 21 cell observations across 43 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near Alamo, CA 94507

Unknown height Crowdsourced cell site Unknown / crowdsource-derived
T-Mobile
5G NR LTE

Alamo, CA

Crowdsourced only

Approximate cell site near Alamo, CA

Crowdsourced cell site with 3 carrier presences. Approximate OpenCelliD-only site clustered from 15 cell observations across 409 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near Alamo, CA 94507

Unknown height Crowdsourced cell site Unknown / crowdsource-derived
AT&T T-Mobile Verizon
5G NR LTE

Alamo, CA

Crowdsourced only

Approximate cell site near Alamo, CA

Crowdsourced cell site with 1 carrier presences. Approximate OpenCelliD-only site clustered from 2 cell observations across 46 crowd samples within 1000 meters. Confidence: medium. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near Alamo, CA 94507

Unknown height Crowdsourced cell site Unknown / crowdsource-derived
T-Mobile
LTE

Alamo, CA

Crowdsourced only

Approximate cell site near Alamo, CA

Crowdsourced cell site with 1 carrier presences. Approximate OpenCelliD-only site clustered from 15 cell observations across 54 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near Alamo, CA 94507

Unknown height Crowdsourced cell site Unknown / crowdsource-derived
T-Mobile
5G NR LTE

Alamo, CA

Crowdsourced only

Approximate cell site near Alamo, CA

Crowdsourced cell site with 1 carrier presences. Approximate OpenCelliD-only site clustered from 17 cell observations across 68 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near Alamo, CA 94507

Unknown height Crowdsourced cell site Unknown / crowdsource-derived
T-Mobile
5G NR LTE

Alamo, CA

Crowdsourced only

Approximate cell site near Alamo, CA

Crowdsourced cell site with 2 carrier presences. Approximate OpenCelliD-only site clustered from 2 cell observations across 53 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near Alamo, CA 94507

Unknown height Crowdsourced cell site Unknown / crowdsource-derived
T-Mobile Verizon
LTE

Alamo, CA

Crowdsourced only

Approximate cell site near Alamo, CA

Crowdsourced cell site with 3 carrier presences. Approximate OpenCelliD-only site clustered from 18 cell observations across 416 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near Alamo, CA 94507

Unknown height Crowdsourced cell site Unknown / crowdsource-derived
AT&T T-Mobile Verizon
5G NR LTE

Carrier share inside this county

County pages are where people start deciding which carrier seems strongest near them. The shares below keep that comparison simple.

T-Mobile 331 sites
Verizon 243 sites
AT&T 125 sites
Dish Wireless 1 sites
Unverified carrier 311-040 1 sites

Related routes

Keep drilling down into the adjacent browse pages that give this route more context.

State page

California

58 counties, 10 carriers, 19274 tower pages.

4303 5G-capable sites

Carrier + state

AT&T in California

3829 tower sites with AT&T presence.

1986 5G-capable sites

What this page is for

Each route should justify itself as a useful lookup page, not just another filter state.

Local coverage

County pages answer local coverage questions

A county view helps when you want to understand why service feels weak on one side of town, or which carrier seems strongest near you.

Coverage at county scale

Precision

Exact and approximate sites are both shown

Some sites are exact FCC ASR matches; others come from crowdsourced cell data and stay approximate. Both are listed without blurring the difference.

350 approximate sites on this page

Go deeper

ZIP pages narrow the same data

If you care about one neighborhood, the ZIP view ranks these same sites by distance from the ZIP centroid.

ZIP-level distance ranking