Piet Heinlaan is een straat te Katwijk in de gemeente Katwijk en is gelegen in de Nederlandse provincie Zuid-Holland.
| Postcode | Huisnummers |
|---|---|
| 2224 SX | 2A, 2B, 2C, 2D, 2E, 2, 4A, 4B, 4C, 4D, 4E, 4, 6A, 6B, 6C, 6D, 6E, 6; |
| 2224 TB | 42, 44, 46, 48, 50, 52, 54; |
| 2224 TD | 66, 68, 70, 72, 74, 76; |
| 2224 TC | 56, 58, 60, 62, 64; |
| 2224 TG | 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89; |
| 2224 TA | 34, 36, 38, 40; |
| 2224 SW | 5, 9, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140; |
| 2224 TE | 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49; |
| 2224 SZ | 3, 8A, 8B, 8C, 8D, 8E, 8, 10A, 10B, 10C, 10D, 10E, 10; |