Sectors in WD3
| Sector | Main place | Postcodes |
|---|---|---|
| WD3 0 | Rickmansworth | 39 |
| WD3 1 | Rickmansworth | 197 |
| WD3 3 | Rickmansworth | 270 |
| WD3 4 | Chorleywood | 162 |
| WD3 5 | Chorleywood | 241 |
| WD3 6 | Sarratt | 69 |
| WD3 7 | Rickmansworth | 95 |
| WD3 8 | Rickmansworth | 133 |
| WD3 9 | Maple Cross | 74 |
Places covered by WD3
- Rickmansworth Three Rivers · 679
- Chorleywood Three Rivers · 377
- Maple Cross Three Rivers · 54
- Sarratt Three Rivers · 34
- West Hyde Three Rivers · 13
- Chenies Buckinghamshire · 12
- Chandler's Cross Three Rivers · 9
- Woodcock Hill Three Rivers · 8
- Chipperfield Dacorum · 5
- Moor Park Three Rivers · 4
- Batchworth Heath Three Rivers · 2
- London Camden · 2
- Micklefield Green Three Rivers · 1