# BT20

4 sectors, 705 postcodes

- **Part of:** [BT](https://openpostcodes.uk/BT)
- **Local authorities:** Ards and North Down

## Sectors

| Sector | Postcodes | Local authority |
|---|---|---|
| [BT20 3](https://openpostcodes.uk/BT20%203) | 253 | Ards and North Down |
| [BT20 4](https://openpostcodes.uk/BT20%204) | 236 | Ards and North Down |
| [BT20 5](https://openpostcodes.uk/BT20%205) | 180 | Ards and North Down |
| [BT20 9](https://openpostcodes.uk/BT20%209) | 36 | — |