Alpena County
Also known as Alpena County, Michigan, Alpena County, MI
county in Michigan, United States
Key facts
- Country
- United States
- State
- Michigan
- Founded
- February 7 , 1857
- Seat
- Alpena
- Largest city
- Alpena
- Total
- 1,695 sq mi (4,390 km )
- Land
- 572 sq mi (1,480 km )
- Water
- 1,123 sq mi (2,910 km ) 66%
- Estimate 2025
- 28,853
- Density
- 50.5/sq mi (19.5/km )
- Time zone
- UTC−5 ( Eastern )
- Summer dst
- UTC−4 ( EDT )
- Congressional district
- 1st
Article
Alpena County (/ælˈpiːnə/ al-PEE-nə) is a county in the U.S. state of Michigan. As of the 2020 census, the population was 28,907. The county seat is Alpena. It is considered to be part of Northern Michigan. Alpena County comprises the Alpena, MI Micropolitan Statistical Area.
History