Alpena, Michigan
Alpena is the only city and county seat of Alpena County in the U.S. state of Michigan. The population was 10,483 at the 2010 census. After Traverse City, it is the second most populated city in the Northern Michigan region. The city is surrounded by Alpena Township, but the two are administered autonomously. It is the core city of the Alpena micropolitan statistical area, which encompasses all of Alpena County and had a total population of 28,360... Show more at the 2010 census. Located at Thunder Bay along the shores of Lake Huron, the Thunder Bay National Marine Sanctuary is located in the city. The population swells with many visitors and tourists during the summer months. MidMichigan Health, which is a federally-designated rural regional medical referral center, is the largest employer in the city.