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Its area consists of the following : . total: 51,100 sq km : (slightly smaller than West Virginia : 
land: 50,660 sq km 
water: 440 sq km 
note: includes Isla del Coco.

The country has coastal plains separated by rugged mountains including over 100 volcanic cones, of which several are major volcanoes.

Four volcanoes, two of them active, rise near the capital of San Jose in the center of the country. One of the volcanoes, Irazu, erupted destructively in 1963-65. They are fun to visit.

The lowest point is the : Pacific Ocean 0 m; the highest point: Cerro Chirripo 3,810 m. ( A meter is 1.8 feet ???)

Population was estimated at 4,133,884 in July 2007.

Astonishingly, Costa Rica has 12 different climatic zones, and by some reports, as many as twenty-seven different weather patterns. 
Perhaps even more astounding, almost five percent of all known species on earth can be found here. 
Additionally, more species of butterflies can be found in Costa Rica than on the entire continent of Africa, and for bird watchers there are over 850 species… more than are in ALL of North America!

Much of the country is in a fault zone and thus includes a large number of volcanoes and mountains.  This is part of the Andean-Sierra Madre chain, and runs the length of the Costa Rica separating the Caribbean Sea to the east from the Pacific Ocean to the west.  Costa Rica has twelve distinct ecological zones – incredibly, more than all of North America combined!  While Costa Rica is assuredly in the tropics, the extreme variations in elevation provide climatic conditions that separate it from tropical climates elsewhere.
The Pacific coast lowlands averages about 90° F while the mountain Cerro Chirripó has peaks above 12,800 feet  and where you will find daytime temperatures that seldom exceed 48° F.