ZIP route

Cell towers near 94403

Nearest tower sites to San Mateo in CA, San Mateo. Distances are measured from the ZIP centroid.

12 Nearby sites

Ranked by distance from the ZIP centroid

3 Carriers

Distinct tenant brands seen nearby

8 5G-capable sites

At least one carrier reports NR

7 Approximate-only nodes

Crowdsourced equipment with no ASR match

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.

San Mateo, CA

Crowdsourced only

Approximate cell site near San Mateo, CA

Crowdsourced cell site with 3 carrier presences. Approximate OpenCelliD-only site clustered from 33 cell observations across 611 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near San Mateo, CA 94403

Unknown height Crowdsourced cell site Unknown / crowdsource-derived 0.1 miles
AT&T T-Mobile Verizon
5G NR GSM LTE

San Mateo, CA

ASR matched

San Mateo 13.7 ASR-1283706

13.7 with 1 carrier presences. Joined to nearby OpenCelliD cells within 200 meters of the FCC structure. Closest matched cell was 161 meters away.

2495 South Delaware Street

14 ft 13.7 Reginald 0.4 miles
Verizon
LTE

San Mateo, CA

ASR matched

San Mateo 13.7 ASR-1283932

13.7 with 1 carrier presences. Joined to nearby OpenCelliD cells within 200 meters of the FCC structure. Closest matched cell was 73 meters away.

2495 South Delaware Street

14 ft 13.7 Reginald 0.5 miles
Verizon
LTE

San Mateo, CA

Crowdsourced only

Approximate cell site near San Mateo, CA

Crowdsourced cell site with 3 carrier presences. Approximate OpenCelliD-only site clustered from 52 cell observations across 844 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near San Mateo, CA 94403

Unknown height Crowdsourced cell site Unknown / crowdsource-derived 0.6 miles
AT&T T-Mobile Verizon
5G NR GSM LTE UMTS

San Mateo, CA

Crowdsourced only

Approximate cell site near San Mateo, CA

Crowdsourced cell site with 3 carrier presences. Approximate OpenCelliD-only site clustered from 45 cell observations across 1160 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near San Mateo, CA 94403

Unknown height Crowdsourced cell site Unknown / crowdsource-derived 0.7 miles
AT&T T-Mobile Verizon
5G NR GSM LTE

San Mateo, CA

Crowdsourced only

Approximate cell site near San Mateo, CA

Crowdsourced cell site with 3 carrier presences. Approximate OpenCelliD-only site clustered from 8 cell observations across 106 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near San Mateo, CA 94497

Unknown height Crowdsourced cell site Unknown / crowdsource-derived 0.9 miles
AT&T T-Mobile Verizon
5G NR LTE

San Mateo, CA

ASR matched

San Mateo 24.4 ASR-1274298

24.4 with 0 carrier presences. Built from FCC ASR registration data; carrier overlays come from nearby OpenCelliD cells.

Transmission Tower 44/173, 1900 South Norfolk Street

24 ft 24.4 MICKIE 1.0 miles

San Mateo, CA

Crowdsourced only

Approximate cell site near San Mateo, CA

Crowdsourced cell site with 3 carrier presences. Approximate OpenCelliD-only site clustered from 23 cell observations across 550 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near San Mateo, CA 94403

Unknown height Crowdsourced cell site Unknown / crowdsource-derived 1.0 miles
AT&T T-Mobile Verizon
5G NR GSM LTE

Carrier presence near this ZIP

Counts below show how many nearby sites report each carrier, based on FCC ASR structures joined with crowdsourced OpenCelliD cells.

Verizon 9 sites
T-Mobile 8 sites
AT&T 7 sites

Related routes

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

County page

San Mateo, CA

472 towers, 3 carriers, 175 approximate sites.

162 5G-capable sites

State page

California

58 counties, 10 carriers, 19274 tower pages.

4303 5G-capable sites

What this page is for

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

Weak signal?

Tower distance is the first thing to check

People looking up towers near a home or office are often diagnosing weak signal. Distance to the nearest site explains most of it; terrain and building materials do the rest.

Distance drives signal strength

Precision note

Not every nearby site has an FCC structure match

Small cells and shorter poles frequently never show up in ASR. They are listed here too, labeled as crowdsourced or approximate.

7 approximate nodes in this list

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