Alpine glaciers begin in mountainous regions and as they grow they flow out from their cirque into a valley. So, to answer your question, alpine glaciers can be found on mountains of high elevations.
If you want to see an alpine glacier, you can visit some National Parks. Here are some National Parks you can visit to see alpine glaciers.
Glacier National Park, Montana
Grand Teton National Park, Wyoming
Yosemite National Park, California
North Cascades National Park, Washington
Mount Rainier National Park, Washington.