Hoofdstraat is een straat te Valkenburg in de gemeente Katwijk en is gelegen in de Nederlandse provincie Zuid-Holland.
| Postcode | Huisnummers |
|---|---|
| 2235 CA | 9A, 9, 11, 13A, 13B, 13C, 13D, 13E, 13F, 13G, 13H, 13J, 13, 15, 7, 7A, 5, 3, 1; |
| 2235 CD | 61, 63, 65, 67, 69, 71A, 71, 73, 75A, 75, 77, 79, 81, 83, 85, 87, 89, 91; |
| 2235 CK | 142, 140, 138, 136, 134, 132, 130, 126, 124, 122, 120, 118, 116, 114, 110, 108, 104, 102, 98; |
| 2235 CE | 129, 131, 133, 135, 137, 145, 147, 149, 151, 153, 155, 103, 105, 107, 109, 111A, 111, 113, 115, 117A, 117, 119, 121, 127; |
| 2235 CC | 41, 43, 45, 47, 49, 51, 53, 55, 57, 59; |
| 2235 CB | 35, 37, 39; |
| 2235 CJ | 56, 58, 60, 62, 66, 68, 70, 72, 74, 78, 84A, 84B, 84C, 84D, 84E, 84F, 84G, 84H, 84J, 84K, 84L, 84M, 84N, 84P, 84Q, 84R, 84S, 84T, 84, 86, 88, 90, 92, 94, 96; |
| 2235 CH | 24, 26, 30A, 30, 32, 34, 36, 38, 40, 42, 46, 48, 50, 52, 54A, 54; |
| 2235 CG | 2, 4, 6A, 6, 8A, 8, 10, 12, 14, 16, 18, 20, 22A, 22B, 22C, 22; |