Area Codes in Brandenburg
| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|---|---|---|---|---|
| 30 | Berlin | Berlin | 3,426,354 | Germany | Europe/Berlin |
| 3301 | Oranienburg | Brandenburg | 40,793 | Germany | Europe/Berlin |
| 3302 | Hennigsdorf | Brandenburg | 26,122 | Germany | Europe/Berlin |
| 3303 | Hohen Neuendorf | Brandenburg | 21,893 | Germany | Europe/Berlin |
| 3304 | Velten | Brandenburg | 11,498 | Germany | Europe/Berlin |
| 33051 | Oranienburg | Brandenburg | 40,793 | Germany | Europe/Berlin |
| 33053 | Zehlendorf | Berlin | 58,469 | Germany | Europe/Berlin |
| 33054 | Liebenwalde | Brandenburg | 4,649 | Germany | Europe/Berlin |
| 33055 | Kremmen | Brandenburg | 7,567 | Germany | Europe/Berlin |
| 33056 | Mühlenbarbek | Schleswig-Holstein | 355 | Germany | Europe/Berlin |
| 3306 | Gransee | Brandenburg | 6,544 | Germany | Europe/Berlin |
| 3307 | Zehdenick | Brandenburg | 14,809 | Germany | Europe/Berlin |
| 33080 | Marienthal | Hamburg | 287,101 | Germany | Europe/Berlin |
| 33082 | Fürstenberg/Havel | Brandenburg | 6,774 | Germany | Europe/Berlin |
| 33083 | Schulzendorf | Brandenburg | 7,452 | Germany | Europe/Berlin |
| 33084 | Gransee | Brandenburg | 6,544 | Germany | Europe/Berlin |
| 33085 | Gransee | Brandenburg | 6,544 | Germany | Europe/Berlin |
| 33087 | Fürstenberg/Havel | Brandenburg | 6,774 | Germany | Europe/Berlin |
| 33088 | Zehdenick | Brandenburg | 14,809 | Germany | Europe/Berlin |
| 33089 | Fürstenberg/Havel | Brandenburg | 6,774 | Germany | Europe/Berlin |
| 33093 | Fürstenberg/Havel | Brandenburg | 6,774 | Germany | Europe/Berlin |
| 331 | Potsdam | Brandenburg | — | Germany | Europe/Berlin |
| 33200 | Nuthetal | Brandenburg | — | Germany | Europe/Berlin |
| 33201 | Potsdam | Brandenburg | — | Germany | Europe/Berlin |
| 33202 | Potsdam | Brandenburg | — | Germany | Europe/Berlin |
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