Kode Area di Krefeld
| Kode Area▲ | Kota↕ | Daerah Administratif↕ | Populasi Kota↕ | Negara/Wilayah | Zona Waktu |
|---|
| 2151 | Duisburg | Nordrhein-Westfalen | 504,358 | Jerman | Europe/Berlin |
Kota Terdekat
| Kota | Wilayah | Negara | Populasi | Kode Area | Kode Pos |
|---|
| Kaarst | Nordrhein-Westfalen | Jerman | 42,112 | 2131, 2161 | 41564 |
| Meerbusch | Nordrhein-Westfalen | Jerman | 54,826 | 2159, 2150, 2132 | 40667, 40668, 40670 |
| Neukircherfeld | Nordrhein-Westfalen | Jerman | — | 2845 | — |
| Tönisvorst | Nordrhein-Westfalen | Jerman | 30,296 | 2152, 2151, 2158, 2156 | 47918 |
| Willich | Nordrhein-Westfalen | Jerman | 51,843 | 2161, 2154, 2156, 2159 | 47877 |