Elevation is the geographical term used to denote how high or low a place is in relation to sea level and is very important for a variety of reasons. Elevation can, for example, influence an area's climate. The elevation of Leadville, CO is particularly interesting as this city is the highest of its kind in all the United States. Leadville has an elevation of 10,152 feet (3,094 m), which is immensely high up and helped the city earn its aforementioned nicknames.
Leadville’s 'Two Mile High City' nickname is a reference to Colorado's state capital, Denver, which has an elevation of 5,280 feet (1,609 m), which is approximately one mile. Leadville isn’t exactly two miles up in terms of elevation, but it is extremely high. A few other settlements around the United States can be found at higher altitudes, but Leadville is the highest incorporated city. Its high elevation is due to its location among the Rocky Mountains, and its elevation of 10,152 feet (3,094 m) is very close to the tree line, which is the elevation at which trees are no longer capable of growing due to the difficult conditions. In Colorado, the tree line begins at 11,000 feet (3,353 m).
Colorado cities have high elevations in general as the state has the highest mean elevation of all with 6,800 feet (2,070 m). The highest point in the state is Mount Elbert, which is actually located barely 16 miles away from Leadville and has an elevation of 14,400 feet (4,401 m), while the lowest point is the Arikaree River, which has an elevation of 3,317 feet (1,011 m). Leadville is much higher up than major cities like Colorado Springs, which has an elevation of 6,033 feet (1,839 m) and Aurora, which has an elevation of 5472 feet (1,668 m).