# AT&T Coverage in Keystone, SD 57751

Evidence suggests limited AT&T coverage in Keystone, SD 57751, especially indoors.

## Summary

- **Carrier**: AT&T (on the AT&T network)
- **Location**: Keystone, SD 57751
- **Verdict**: WEAK (weak)
- **Towers on network**: 7
- **Best signal (dBm)**: -56.1
- **Nearest tower**: 4.0 mi
- **Low-band sites**: 1
- **Mid-band sites**: 6
- **High-band sites**: 0

## Coordinates

- **Latitude**: 43.86767
- **Longitude**: -103.42346

## Competitor Networks at This Location

- **Verizon** (Verizon): 3 towers, verdict WEAK (weak), best -65.8 dBm

## AT&T Coverage in Nearby Cities

- [Keystone, SD](/coverage/att/near/city-state/keystone/sd) — 7 towers
- [Custer, SD](/coverage/att/near/city-state/custer/sd) — 5 towers
- [Rapid City, SD](/coverage/att/near/city-state/rapid-city/sd) — 5 towers
- [Sundance, WY](/coverage/att/near/city-state/sundance/wy) — 3 towers

## Related Links

- [View the interactive carrier map](https://www.celltowermaps.com/coverage/att/near/zip-code/57751): Human-readable map for this carrier and ZIP code.
- [All carriers near this ZIP code](https://www.celltowermaps.com/cell-towers/near/zip-code/57751/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.