Figures provided by the National Committee on Disaster Management show flooding has affected 231,000 people across nearly all of the country. Around 23,000 people have been evacuated to higher ground, and many roads and buildings have suffered damage.
Ma Norith, head of the committee's information department, said water levels on the Mekong River, which runs through Cambodia, remain high.
"The water is starting to dry out in most of the areas," he said. "But whether the worst case is finished or not, we cannot yet say."
The floods are Cambodia's worst since 2000, when more than 370 people died.
The government's strategy to help those affected has come in for criticism, with thousands of people still waiting for assistance.