Alpena is a city located in Alpena County Michigan. It is also the county seat of Alpena County. With a 2020 population of 9,924, it is the 93rd largest city in Michigan and the 3125th largest city in the United States . Alpena is currently declining at a rate of -0.16% annually and its population has decreased by -5.33% since the most recent census, which recorded a population of 10,483 in 2010. Alpena reached it's highest population of 14,682 in 1960. Spanning over 9 miles, Alpena has a population density of 1,215 people per square mile.
The average household income in Alpena is $50,895 with a poverty rate of 18.80%. The median rental costs in recent years comes to $620 per month, and the median house value is $74,600. The median age in Alpena is 42.4 years, 39.2 years for males, and 44.9 years for females.