Graaf Janstraat is een straat te Ridderkerk in de gemeente Ridderkerk en is gelegen in de Nederlandse provincie Zuid-Holland.
| Postcode | Huisnummers |
|---|---|
| 2983 HE | 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 12, 10, 8, 6, 4, 2, 48, 50, 52, 54, 56; |
| 2983 HD | 77, 75, 73, 71, 69, 65, 63, 61, 59, 57, 55, 53, 51, 49, 47, 45, 43, 41; |
| 2983 HG | 98, 100, 102, 104, 106, 108, 110, 112, 114, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96; |
| 2983 HC | 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39; |