Average GPS coordinates for Dahlem Postcode location: 49.917, 6.6. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Dahlem on map:

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Listing cities & postcodes (1):
>> Rheinland-Pfalz, 54636 Dahlem, Eifelkreis Bitburg-Prüm, GPS coordinates: 49.9167,6.6