| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Hoggeston | MK18 |
| Postal/ZIP Codes in Hogshaw | MK18 |
| Postal/ZIP Codes in Hollingdon | LU7 0DN |
| Postal/ZIP Codes in Holmer Green | HP15 |
| Postal/ZIP Codes in Horsleys Green | HP14 |
| Postal/ZIP Codes in Horton | LU7 |
| Postal/ZIP Codes in Hughenden | HP14 4LA |
| Postal/ZIP Codes in Hughenden Valley | HP14 |
| Postal/ZIP Codes in Hulcott | HP22 5AX |
| Postal/ZIP Codes in Hyde End | HP16 |
| Postal/ZIP Codes in Hyde Heath | HP16, HP6 |
| Postal/ZIP Codes in Ibstone | HP14 |
| Postal/ZIP Codes in Ibstone Common | HP14 3XU |
| Postal/ZIP Codes in Ickford | HP18 |
| Postal/ZIP Codes in Inkerman Hill | HP15 7JH |
| Postal/ZIP Codes in Iver | SL0 |
| Postal/ZIP Codes in Iver Heath | SL0 0LQ, SL0 0PB |
| Postal/ZIP Codes in Ivinghoe | LU7 |
| Postal/ZIP Codes in Ivinghoe Aston | LU7 |
| Postal/ZIP Codes in Jordans | HP9 |
| Postal/ZIP Codes in Kimblewick | HP17 |
| Postal/ZIP Codes in Kings Ash | HP16 9NP |
| Postal/ZIP Codes in Kingsey | HP17 |
| Postal/ZIP Codes in Kingswood | HP18 |
| Postal/ZIP Codes in Knotty Green | HP9 |
| Postal/ZIP Codes in Lacey Green | HP27 |