Erfweg is een straat te Kerkrade in de gemeente Kerkrade en is gelegen in de Nederlandse provincie Limburg.
| Postcode | Huisnummers |
|---|---|
| 6462 LB | 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 15, 13, 11, 9, 7, 5, 3, 1; |
| 6462 LA | 32 TR, 30, 28, 26, 24, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2; |