Size: Total area 181,040 square kilometers, about size of Missouri country shares 800-kilometer border with Thailand on north and west, 541-kilometer border with Laos on northeast, 1,228- kilometer border with Vietnam on east and southeast coastline along Gulf of Thailand about 443 kilometers.

Topography: Most salient topographical feature lacustrine plain formed by inundations of Tonle Sap (Great Lake), measuring about 2,590 square kilometers during dry season to about 24,605 square kilometers during rainy season. This densely populated plain devoted to wet rice cultivation constitutes heartland of Cambodia. Most (about 75 percent) of country lies at elevations of less than 100 meters above sea level, except for Cardamon Mountains (highest elevation 1,771 meters), their north-south extension to the east, Elephant Range (elevation range 500-1,000 meters) and steep escarpment of Dangrek Mountains (average elevation 500 meters) along northern border with Thailand.

Climate: Temperatures range from 10° C to 38° C. Tropical monsoons: southwest monsoon blowing inland in northeasterly direction brings moisture-laden winds from Gulf of Thailand/Indian Ocean from May to October with period of heaviest precipitation September-October northeast monsoon blowing in southwesterly direction toward coast ushers in dry season, November to March, with period of least rainfall January-February.

Data as of December 1987