This is the primary telephone area code for Hildesheim and its surrounding urban districts in the state of Lower Saxony (Niedersachsen), Germany.
How to Call Hildesheim from Overseas
- Dial your country's exit code (International Access Code)
- Dial 49 (Germany country code)
- Dial the area code (5121 - without the leading 0)
- Dial the local phone number
Example: Calling Hildesheim from the United States
011 49 5121 123456
Where:
011 = USA exit code
49 = Germany country code
5121 = Hildesheim area code (05121 without the 0)
123456 = Local Hildesheim phone number
Quick Facts
Hildesheim Area Code Coverage
The 05121 area code covers central Hildesheim and key city districts including:
City Center
Marktplatz, Historic St. Michael's Church, St. Andreas, Hauptbahnhof
North Hildesheim
Marienburg, Ochtersum, Ahrbergen
South Hildesheim
Drüber, Lamspringe*, Moritzberg
East Hildesheim
Giesen*, Bavenstedt, Sorsum
West Hildesheim
Borgwitz, Itzenbüttel, Steuerwald
Outskirts
*Note: Some neighboring municipalities like Lamspringe or Giesen may use 05121 or adjacent codes (e.g., 05183, 05184)
Major Germany Area Codes
Common Exit Codes for Calling Germany
When calling Hildesheim from these countries, use these exit codes:
United States
011
Australia
0011
European Union
00
Japan
010
China
00
Canada
011