Males had a median income of $55,297 versus $35,435 for females. The per capita income for the county was $29,475. About 4.9% of families and 7.0% of the population were below the poverty line, including 10.6% of those under age 18 and 6.3% of those age 65 or over.
The Andes Mountains. The Andes Mountains form one of the longest mountain ranges on Earth, stretching over 7,000 km (4,400 miles) along the west coast of South America.The Andes are very narrow in most places and the average width of the Andes is 200 km (124 miles).The height of the Andes is about 4,000 meters (13,123 feet) high, and it includes peaks above 6,000 meters (19,685 feet).he Andes are very narrow in most places and the average width of the Andes is 200 km (124 miles). The height of the Andes is about 4,000 meters (13,123 feet) high, and it includes peaks above 6,000 meters (19,685 feet).
The rocks making up the mountains were formed before the mountains were raised. The cores of the mountain ranges are in most places formed of pieces of continental crust that are over one billion years old.In the south, an older mountain range was formed 300 million years ago, then eroded away.The rocks of that older range were reformed into the Rocky Mountains. The Rocky Mountains took shape during an intense period of plate tectonic activity that resulted in much of the rugged landscape of the western North America.The Laramide orogeny, about 80â55 million years ago, was the last of the three episodes and was responsible for raising the Rocky Mountains.he rocks making up the mountains were formed before the mountains were raised. The cores of the mountain ranges are in most places formed of pieces of continental crust that are over one billion years old.