Which part of US has higher elevations?

The western part of the United States has higher elevations compared to the eastern part. The Rocky Mountains, Sierra Nevada, and Cascade Range are major mountain ranges located in the western US and they contain some of the highest peaks in the country, including Mount Elbert in Colorado (highest peak in the Rocky Mountains), Mount Whitney in California (highest peak in the contiguous US), and Mount Hood in Oregon (highest peak in the Cascade Range).