Het Firmament is een straat te Apeldoorn in de gemeente Apeldoorn en is gelegen in de Nederlandse provincie Gelderland.
| Postcode | Huisnummers |
|---|---|
| 7325 EE | 32, 34, 36, 30, 28, 26, 24, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2, 38, 40, 42, 44, 46, 48; |
| 7325 EC | 17, 15, 13, 11, 9, 7, 5, 3, 1; |
| 7325 EH | 140, 142, 144, 146, 148, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138; |
| 7325 EG | 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98; |
| 7325 EJ | 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, 182, 184, 186, 188, 190, 192, 194, 196, 198; |
| 7325 ED | 201, 203, 205, 207, 209, 211, 213, 215, 217; |
| 7325 EK | 200, 202, 204, 206, 208, 210, 212, 214, 216, 218; |