Hoofdstraat is een straat te Oostwold in de gemeente Oldambt en is gelegen in de Nederlandse provincie Groningen.
| Postcode | Huisnummers |
|---|---|
| 9682 PJ | 7, 9, 11, 13, 15, 17A, 17, 21; |
| 9682 PK | 4, 6, 8, 10, 12, 16, 18, 20, 22, 24, 26, 30, 32, 34; |
| 9828 PB | 231, 233, 235 I, 235, 237, 229, 229 I, 227, 225, 217, 217d, 217c, 217b, 217a, 215; |
| 9828 PC | 239, 241, 243, 245, 247, 249, 251, 253, 255, 257, 259 1, 259 2, 259 3, 259 4, 261 3, 261 I, 261 II, 261, 263, 265a, 265, 267; |
| 9828 PD | 216, 220, 222, 224, 226, 228e, 228, 232, 234, 236, 238, 240, 242, 244, 246, 248, 250 BEGR, 250 I, 250 II, 250 III, 250, 252; |
| 9828 PA | 213, 211, 209, 207, 205, 203, 201, 201 I, 199, 199b, 199a, 197, 197a, 195; |
| 9828 PE | 254 I, 254 II, 254, 256, 258, 260, 262, 264, 266, 268, 270a, 270b, 270c, 270d, 270, 272; |