Reconsider travel to Cambodia due to COVID-19. Read the entire Travel Advisory. 
Read the Department of State’s COVID-19 page before you plan any international travel.    
The Centers for Disease Control and Prevention (CDC) has issued a Level 3 Travel Health Notice for Cambodia for COVID-19, indicating a high level of COVID-19 in the country. Visit the Embassy’s COVID-19 page for more information on COVID-19 in Cambodia.
Exercise increased caution in:
Phnom Penh due to crime.
Very remote areas of Battambang, Banteay Meanchey, Pursat, Siem Reap, Pailin, and Kampong Thom provinces due to land mines.
Read the country information page.
If you decide to travel to Cambodia:
See the U.S. Embassy’s web page regarding COVID-19.  
Visit the CDC’s webpage on Travel and COVID-19.    
Enroll in the Smart Traveler Enrollment Program (STEP) to receive Alerts and make it easier to locate you in an emergency. Be sure to put an end date to your trip when you enroll.
Follow the Department of State on Facebook and Twitter.
Review the Crime and Safety Report for Cambodia.
U.S. citizens who travel abroad should always have a contingency plan for emergency situations. Review the Traveler’s Checklist.
Phnom Penh
Street crime, particularly phone and bag snatchings, occurs frequently in areas where foreigners gather; resistance can result in injury. We urge all travelers to be aware of their surroundings at all time and to be extra vigilant when displaying items like jewelry, bags and cell phones in public. Violent crime, such as sexual assault and homicide, is common, sometimes against foreigners.
Do not physically resist any robbery attempt. Use caution when walking or driving at night. 
Battambang, Banteay Meanchey, Pursat, Siem Reap, Pailin, and Kampong Thom provinces
Land mines and unexploded ordnance are found in very remote areas throughout Cambodia, and especially in Battambang, Banteay Meanchey, Pursat, Siem Reap, Pailin, and Kampong Thom provinces.
Do not touch unknown metal objects; instead notify the Cambodia Mine Action Center at 012-800-473/023-995-437. Use a local guide when walking in forested areas or dry rice paddies in these areas.
Last Update: Reissued with updates to COVID-19 information.

Reconsider travel to Cambodia due to COVID-19. Read the entire Travel Advisory. 

Read the Department of State’s COVID-19 page before you plan any international travel.    

The Centers for Disease Control and Prevention (CDC) has issued a Level 3 Travel Health Notice for Cambodia for COVID-19, indicating a high level of COVID-19 in the country. Visit the Embassy’s COVID-19 page for more information on COVID-19 in Cambodia.

Exercise increased caution in:

• Phnom Penh due to crime.
• Very remote areas of Battambang, Banteay Meanchey, Pursat, Siem Reap, Pailin, and Kampong Thom provinces due to land mines.

Read the country information page.

If you decide to travel to Cambodia:

• See the U.S. Embassy’s web page regarding COVID-19.  
• Visit the CDC’s webpage on Travel and COVID-19.    
• Enroll in the Smart Traveler Enrollment Program (STEP) to receive Alerts and make it easier to locate you in an emergency. Be sure to put an end date to your trip when you enroll.
• Follow the Department of State on Facebook and Twitter.
• Review the Crime and Safety Report for Cambodia.
• U.S. citizens who travel abroad should always have a contingency plan for emergency situations. Review the Traveler’s Checklist.

Phnom Penh

Street crime, particularly phone and bag snatchings, occurs frequently in areas where foreigners gather; resistance can result in injury. We urge all travelers to be aware of their surroundings at all time and to be extra vigilant when displaying items like jewelry, bags and cell phones in public. Violent crime, such as sexual assault and homicide, is common, sometimes against foreigners.

Do not physically resist any robbery attempt. Use caution when walking or driving at night. 

Battambang, Banteay Meanchey, Pursat, Siem Reap, Pailin, and Kampong Thom provinces

Land mines and unexploded ordnance are found in very remote areas throughout Cambodia, and especially in Battambang, Banteay Meanchey, Pursat, Siem Reap, Pailin, and Kampong Thom provinces.

Do not touch unknown metal objects; instead notify the Cambodia Mine Action Center at 012-800-473/023-995-437. Use a local guide when walking in forested areas or dry rice paddies in these areas.

Last Update: Reissued with updates to COVID-19 information.

Credit : travel.state.gov: Travel Advisories