Alpena County, Michigan

Alpena County: county in Michigan, United States

About

Alpena County is a county located in the U.S. state of Michigan. As of the 2010 census, the population was 29,598 and a population density of 7 people per km². After 10 years in 2020 county had an estimated population of 28,238 inhabitants. Its county seat is Alpena. The county was created 186 years ago in 1839.

Alpena County locator map
Location of Alpena County on Michigan map.

County Snapshot

Alpena County at a glance

Alpena County currently has 4 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

4

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

Quick Facts about Alpena County

Population 28,238 (2020)
Country United States of America
State Michigan (United States)
Area 4390 km2
Water as percent of area 66%
Land as percent of area 34%
Latitude & Longitude 45.0635,-83.4604
Altitude 735 feet / 224 meters
Capital Alpena
Establishment January 01, 1840
Time Zone America/Detroit
Local time 21:05:07 (17th April 2026)
Density 6 Pop. per km² as of 2020
Population growth -4.82% (2010-2020)
Weather 54℉ Patchy Fog then Sunny 7-days weather
Alpena County Courthouse - Alpena Michigan image
Alpena County Courthouse - Alpena Michigan image

Geography

Alpena County is located at 45°3'49"N 83°27'37"W (45.0635000, -83.4603900). It has 3 neighbors: Alcona County, Montmorency County and Huron.

Alpena County map

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The largest city of Alpena County is Alpena with a population of 8,696. Other cities include and Ossineke population 1,593. See all Alpena County cities & populated places.

Alpena County Populated Places

Cities, towns, neighborhoods & other populated places in Alpena County.

City Name Population Title
Alpena 8,696 City in and county seat of Alpena County, Michigan, United States
Ashland 2,775 Township in Newaygo County, Michigan
Ossineke 1,593 Unincorporated community in Michigan
Long Rapids 978 Civil township in Alpena County, Michigan

Weather

54°F
Patchy Fog then Sunny
0 to 10 mph NE Friday

Patchy fog before 10am. Sunny, with a high near 54. Northeast wind 0 to 10 mph.

7-Day Forecast

Official website of Alpena County

Official Website
  • Alpena

Demographics

According to census records, the population of Alpena County decreased by 4.82% in 10 years.

Year Population % Change Method
2010 29,598 - census
2011 29,340 -0.88% estimation process
2012 29,166 -0.6% estimation process
2013 28,957 -0.72% estimation process
2014 28,882 -0.26% estimation process
2015 28,722 -0.56% estimation process
2016 28,663 -0.21% estimation process
2017 28,428 -0.83% estimation process
2018 28,384 -0.16% estimation process
2019 28,405 0.07% estimation process
2020 28,238 -0.59% estimation process
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People born in Alpena County (1)

American basketball player Harvey Marlatt was born in Alpena County

Michigan Other Counties (more counties)

County Name Population Title
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Kent County 658,708 County in Michigan, United States
Genesee County 404,794 County in Michigan, United States
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Ottawa County 294,635 County in Michigan, United States
Ingham County 290,609 County in Michigan, United States
Kalamazoo County 265,988 County in Michigan, United States
Grand Rapids 200,031 The second most populous city in Michigan.
Livingston County 192,335 County in Michigan, United States
Saginaw County 189,868 County in Michigan, United States
Muskegon County 173,883 County in Michigan, United States
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Jackson County 156,920 County in Michigan, United States