# Xfinity Coverage in San Francisco, CA 94121

Evidence suggests excellent, dense multi-band coverage for Xfinity in San Francisco, CA 94121.

## Summary

- **Carrier**: Xfinity (on the Verizon network)
- **Location**: San Francisco, CA 94121
- **Verdict**: EXCELLENT (excellent)
- **Towers on network**: 725
- **Best signal (dBm)**: -43.9
- **Nearest tower**: 0.38 mi
- **Low-band sites**: 4
- **Mid-band sites**: 710
- **High-band sites**: 11

## Coordinates

- **Latitude**: 37.77849
- **Longitude**: -122.49548

## Competitor Networks at This Location

- **T-Mobile** (T-Mobile): 1,191 towers, verdict EXCELLENT (excellent), best -33.5 dBm
- **AT&T** (AT&T): 448 towers, verdict STRONG (strong), best -50.4 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/94121): Human-readable map for this carrier and ZIP code.
- [All carriers near this ZIP code](https://www.celltowermaps.com/cell-towers/near/zip-code/94121/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.