# Xfinity Coverage in San Mateo, CA 94403

Evidence suggests excellent, dense multi-band coverage for Xfinity in San Mateo, CA 94403.

## Summary

- **Carrier**: Xfinity (on the Verizon network)
- **Location**: San Mateo, CA 94403
- **Verdict**: EXCELLENT (excellent)
- **Towers on network**: 201
- **Best signal (dBm)**: -38.2
- **Nearest tower**: 0.18 mi
- **Low-band sites**: 4
- **Mid-band sites**: 196
- **High-band sites**: 1

## Coordinates

- **Latitude**: 37.53844
- **Longitude**: -122.30454

## Competitor Networks at This Location

- **T-Mobile** (T-Mobile): 380 towers, verdict EXCELLENT (excellent), best -34.0 dBm
- **AT&T** (AT&T): 164 towers, verdict STRONG (strong), best -36.8 dBm

## Xfinity Coverage in Nearby Cities

- [Emeryville, CA](/coverage/xfinity-mobile/near/city-state/emeryville/ca) — 825 towers
- [Berkeley, CA](/coverage/xfinity-mobile/near/city-state/berkeley/ca) — 814 towers
- [San Francisco, CA](/coverage/xfinity-mobile/near/city-state/san-francisco/ca) — 744 towers
- [Santa Clara, CA](/coverage/xfinity-mobile/near/city-state/santa-clara/ca) — 658 towers
- [Albany, CA](/coverage/xfinity-mobile/near/city-state/albany/ca) — 635 towers
- [Oakland, CA](/coverage/xfinity-mobile/near/city-state/oakland/ca) — 504 towers

## Related Links

- [View the interactive carrier map](https://www.celltowermaps.com/coverage/xfinity-mobile/near/zip-code/94403): Human-readable map for this carrier and ZIP code.
- [All carriers near this ZIP code](https://www.celltowermaps.com/cell-towers/near/zip-code/94403/index.md): Text-first tower summary without a carrier filter.

## Data Source

Tower data is sourced from U.S. Federal Communications Commission licensing records and OpenCellID observations. See [llms.txt](https://www.celltowermaps.com/llms.txt) for methodology and access guidance.