---
title: "+378 Country Code: San Marino Dialing Code & Format"
description: "+378 is the country code of San Marino. To call, dial +378 then the number. Examples, number length and time zones."
url: https://ailocator.app/country-codes/san-marino
lang: en
dateModified: "2026-10-18"
---

Country calling code

#  +378 San Marino country code

San Marino’s international calling code is **+378**. To call a San Marino number from another country, dial your exit code, then 378, then the local number.

Calling code

+378

ISO 3166 code

SM · 674

Exit code (calling out)

00

Trunk prefix (domestic)

None

Number length

8–10 digits

Time zones

San Marino

Local time

—

Number formats and examples are generated from [libphonenumber-js numbering-plan metadata](https://github.com/catamphetamine/libphonenumber-js). They describe numbering rules, not a verified active subscriber or a phone’s current location. For an individual number, try the [free format lookup](https://ailocator.app/phone-number-lookup).

## How to call San Marino

| Calling from | Dial |
| --- | --- |
| A mobile phone, anywhere | `+378 66 66 12 12` |
| United States & Canada | `011 378 66 66 12 12` |
| UK, Europe & most countries | `00 378 66 66 12 12` |
| Australia | `0011 378 66 66 12 12` |
| Inside San Marino | `66 66 12 12` |

San Marino does not use a trunk prefix, so the number you dial at home is the same one you dial after +378.

## San Marino phone number format

A sample mobile number in San Marino is written **+378 66 66 12 12** internationally, **66 66 12 12** locally, and **+37866661212** in the E.164 format that apps and websites store. Numbers are 8–10 digits long after the country code.

Not sure where a number is from? Paste it into our free [phone number lookup](https://ailocator.app/phone-number-lookup) to see the country, line type and correct format.

## Calling abroad from San Marino

To call another country from a San Marino landline, start with the exit code **00**, then the destination country code. On a mobile phone, holding **0** to type **+** works everywhere and replaces the exit code.

## Missed call from +378?

If you don’t know anyone in San Marino, be careful with short missed calls from international numbers. “One-ring” scams hope you call back a premium-rate line. Don’t return the call, don’t share codes sent by SMS, and block the number if it keeps calling. A genuine contact will usually leave a message or text.

AI Family Locator

## Request location sharing for a +378 number

Enter the San Marino number to prepare a request. The owner must install the iPhone app and approve sharing before a live GPS location appears.

[Locate the number](https://ailocator.app/start)

## Frequently asked questions

### Which country uses the +378 code?

+378 is the international calling code of San Marino (SM). No other country uses it.

### How do I call San Marino from the United States?

Dial 011 (the US exit code), then 378, then the local number without any prefix. From a mobile phone you can simply type +378 66 66 12 12.

### How many digits are in a San Marino phone number?

National numbers in San Marino are 8–10 digits long after the +378 country code. A typical mobile number looks like +378 66 66 12 12.

### Can I find the location of a +378 number?

Not from the number alone. Enter the number in [AI Family Locator](https://ailocator.app/start) and send a location request. Live GPS location appears only after the owner installs the app and approves sharing. A number lookup shows only numbering details, not a current location.

## Nearby calling codes

-   [ Monaco +377](https://ailocator.app/country-codes/monaco)
-   [ Andorra +376](https://ailocator.app/country-codes/andorra)
-   [ Ukraine +380](https://ailocator.app/country-codes/ukraine)
-   [ Belarus +375](https://ailocator.app/country-codes/belarus)
-   [ Serbia +381](https://ailocator.app/country-codes/serbia)
-   [ Armenia +374](https://ailocator.app/country-codes/armenia)
-   [ Montenegro +382](https://ailocator.app/country-codes/montenegro)
-   [ Kosovo +383](https://ailocator.app/country-codes/kosovo)

[All country calling codes →](https://ailocator.app/country-codes)

Source: [Original page](https://ailocator.app/country-codes/san-marino) · Last updated: 2026-10-18