Cartagena

It’s located in the north of South America (4°N, 72°W) and is part of Caribbean South America. It has sea borders with Jamaica, Haiti and the Dominican Republic to the east and Costa Rica and Guatemala to both east and west; and land borders with Panama (225 km/140 mi) to the northwest, Ecuador (590 km/367 mi) and Peru (1,496 km/930 mi) to the south, Brazil (1,643 km/1,021 mi) to the southeast, and Venezuela (2,050 km/1,274 mi) to the east. Colombia is the only South American country to have coastlines on both the Atlantic Ocean (1,760 km/1,094 mi) and the Pacific Ocean (1,448 km/900 mi).

At 440,839 mi² (1,141,748 km²), Colombia is the world's 26th-largest country (after South Africa). It is comparable in size to Ethiopia, and is a third smaller than the US state of Alaska. Colombia is the fourth biggest country in South America after Brazil, Argentina and Peru and the seventh largest one in the the Americas. From this area, the landmass covers 1,038,700 square kilometers (401,044 sq. mi) and the water area comprises 100,210 square kilometers (38,691 sq. mi). The country also covers an archipelago in the Caribbean sea (San Andres, Providencia and Santa Catalina) that forms the territory of the department San Andrés y Providencia.

With over 41 million people, Colombia is the third-most populous country in Latin America, after Brazil and Mexico. Movement from rural to urban areas was very heavy in the middle of the 20th century, but has since tapered off. The urban population increased from 31% of the total population in 1938, to 57% in 1951 and about 70% by 1990.

San Andrés

Currently the figure is about 77%. Thirty cities have a population of 100,000 or more. The nine eastern lowlands departments, constituting about 54% of Colombia's area, have less than 3% of the population and a density of less than one person per square kilometer.