Districts in the HP area
| District | Main place | Local authority | Sectors | Postcodes |
|---|---|---|---|---|
| HP1 | Hemel Hempstead | Dacorum | 4 | 681 |
| HP2 | Hemel Hempstead | Dacorum | 4 | 987 |
| HP3 | Hemel Hempstead | Dacorum | 3 | 763 |
| HP4 | Berkhamsted | Dacorum | 4 | 737 |
| HP5 | Chesham | Buckinghamshire | 4 | 730 |
| HP6 | Amersham | Buckinghamshire | 3 | 428 |
| HP7 | Amersham | Buckinghamshire | 2 | 359 |
| HP8 | Chalfont St Giles | Buckinghamshire | 1 | 220 |
| HP9 | Beaconsfield | Buckinghamshire | 3 | 554 |
| HP10 | Flackwell Heath | Buckinghamshire | 3 | 564 |
| HP11 | High Wycombe | Buckinghamshire | 3 | 492 |
| HP12 | High Wycombe | Buckinghamshire | 3 | 489 |
| HP13 | High Wycombe | Buckinghamshire | 3 | 847 |
| HP14 | Stokenchurch | Buckinghamshire | 2 | 541 |
| HP15 | Hazlemere | Buckinghamshire | 3 | 424 |
| HP16 | Prestwood | Buckinghamshire | 3 | 372 |
| HP17 | Haddenham | Buckinghamshire | 3 | 373 |
| HP18 | Aylesbury | Buckinghamshire | 3 | 695 |
| HP19 | Aylesbury | Buckinghamshire | 4 | 593 |
| HP20 | Aylesbury | Buckinghamshire | 3 | 530 |
| HP21 | Aylesbury | Buckinghamshire | 3 | 725 |
| HP22 | Wendover | Buckinghamshire | 7 | 976 |
| HP23 | Tring | Dacorum | 4 | 576 |
| HP27 | Princes Risborough | Buckinghamshire | 3 | 445 |
Main places in the HP area
- Hemel Hempstead
- Aylesbury
- High Wycombe
- Berkhamsted
- Chesham
- Amersham
- Beaconsfield
- Tring
- Princes Risborough
- Hazlemere
- Wendover
- Haddenham
- Little Chalfont
- Prestwood
- Chalfont St Giles
- Flackwell Heath
- Stoke Mandeville
- Aston Clinton
- Wooburn Green
- Stokenchurch
- Bovingdon
- Broughton
- Holmer Green
- Lane End
- Loudwater
- Tylers Green
- Great Missenden
- Long Crendon
- Penn
- Longwick