Oostermaat is een straat te Genemuiden in de gemeente Zwartewaterland en is gelegen in de Nederlandse provincie Overijssel.
| Postcode | Huisnummers |
|---|---|
| 8281 RB | 1, 2a, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 22, 24, 26, 28, 30, 32; |
| 8281 RD | 21, 23, 25, 27, 31, 33, 35, 36, 37, 38, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 53, 54, 55, 56, 58, 60, 64, 66, 68, 70, 72; |