Colombia is 5.3 times larger than Guyana.
Area: 1,138,910 km2 World Factbook
Population: 46,245,297 (July 2014) World Factbook
Area: 214,969 km2 World Factbook
Population: 735,554 (July 2014) World Factbook
Guyana, officially the Co-operative Republic of Guyana, is a sovereign state on the northern coast of South America. Although Guyana is part of the Anglophone Caribbean, it is one of the few Caribbean countries that is not an island. Wikipedia