KH
How to Call Cambodia from the United States
Country code +855 — Dial 011 855 91 XXX XXX from a US landline or +855 91 XXX XXX from a mobile phone.
What to Dial
- 1Dial 011 from a US landline, or + from a mobile (hold the 0 key).
- 2Dial 855, the country code of Cambodia.
- 3Dial the number: 8 or 9 digits, without the leading 0 used for calls inside Cambodia.
| Calling a… | Written in Cambodia | From a US landline | From a cell phone |
|---|---|---|---|
| Mobile | 091 XXX XXX |
011 855 91 XXX XXX |
+855 91 XXX XXX |
| Landline | 023 XXX XXX |
011 855 23 XXX XXX |
+855 23 XXX XXX |
X stands for any digit. More number types: Cambodia phone number format.
Mobile or Landline?
Cambodia had 116 mobile subscriptions and 0.2 landlines per 100 people in 2024. Most people you call will be on a mobile, so ask for their mobile number and check what your plan charges for calls to Cambodia mobiles.
Source: World Bank (ITU).
Calling Tips for Cambodia
Best Time to Call
To reach someone between 9 AM and 8 PM in Phnom Penh, call between 9:00 PM–8:00 AM EST (6:00 PM–5:00 AM PST). Cambodia doesn’t change its clocks, so the gap moves by an hour when the US does.
Cambodia is on UTC+7, 12 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.