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How to Call Monaco from the United States

Country code +377 — Dial 011 377 6 XX XX XX XX from a US landline or +377 6 XX XX XX XX from a mobile phone.

+377
Monaco Country Code

What to Dial

  1. 1Dial 011 from a US landline, or + from a mobile (hold the 0 key).
  2. 2Dial 377, the country code of Monaco.
  3. 3Dial the number: 8 or 9 digits for mobiles and 8 for landlines, without the leading 0 used for calls inside Monaco.
Calling a… Written in Monaco From a US landline From a cell phone
Mobile 06 XX XX XX XX 011 377 6 XX XX XX XX +377 6 XX XX XX XX
Landline 99 XX XX XX 011 377 99 XX XX XX +377 99 XX XX XX

X stands for any digit. Mobile numbers start with 03, 044–046, 06 or 07. More number types: Monaco phone number format.

Mobile or Landline?

Monaco had 107 mobile subscriptions and 95.5 landlines per 100 people in 2024. Landlines are still common, which matters because many US plans charge different rates for landlines and mobiles.

Source: World Bank (ITU).

Calling Tips for Monaco

Best Time to Call

To reach someone between 9 AM and 8 PM in Monaco, call between 3:00 AM–2:00 PM EDT (12:00 AM–11:00 AM PDT). Monaco changes its clocks for daylight saving time.

Monaco is on UTC+2, 6 hours ahead of US Eastern Time right now.

Cost Saving Tips

  • VoIP services such as Google Voice or Vonage usually charge less per minute than a carrier's standard international rate.
  • WiFi calling apps (WhatsApp, Viber, FaceTime) are free when both parties have the app.
  • Check your carrier's international plan — many offer add-on packages.

Time Difference

US Eastern (EDT)
--:--
UTC-4
+6h
Monaco
--:--
UTC+2

Frequently Asked Questions

How do I call Monaco from the US?
From a US landline, dial 011, then 377, then the number without its leading 0: 011 377 6 XX XX XX XX for a mobile. From a cell phone, dial +377 6 XX XX XX XX.
Do I dial the 0 when calling Monaco from abroad?
No. The leading 0 is only for calls inside Monaco. A number written 06 XX XX XX XX at home is dialed +377 6 XX XX XX XX from abroad.
How many digits is a phone number in Monaco?
8 or 9 digits for mobiles and 8 for landlines after the country code +377. Mobile numbers start with 03, 044–046, 06 or 07 when written with the leading 0.
What time should I call Monaco from the US?
Monaco is 6 hours ahead of New York (UTC+2 in Monaco). To reach someone between 9 AM and 8 PM there, call between 3:00 AM–2:00 PM EDT, or 12:00 AM–11:00 AM PDT on the West Coast. Monaco uses daylight saving time, so the difference changes during the year.
How do people in Monaco call the US?
They dial the exit code 00, then 1 and the 10-digit US number: 00 1 XXX XXX XXXX, or +1 from a mobile.
How much does it cost to call Monaco?
It depends on your plan: many US plans charge per minute for international calls, and calls to Monaco mobiles often cost more than calls to landlines. Internet calling apps are free when both people have the same app.
Monaco Quick Info
Country Code +377
ISO Code MC
Capital Monaco
Time Zone UTC+2
Exit Code (US) 011
Full Country Profile
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