Sectors in TS23
| Sector | Main place | Postcodes |
|---|---|---|
| TS23 1 | Billingham | 172 |
| TS23 2 | Billingham | 208 |
| TS23 3 | Billingham | 320 |
| TS23 4 | Billingham | 67 |
Places covered by TS23
- Billingham Stockton-on-Tees · 754
- Cowpen Bewley Stockton-on-Tees · 4
- Stockton-on-Tees Stockton-on-Tees · 4