County · code 26001
Alcona CountyMichigan
Alcona County is a county in Michigan with its seat in Harrisville. The county was formed in 1840 and covers 674.7 square miles.
- Founded1840
- County seatHarrisville
- Land area675 sq mi + 1,116 sq mi water
- Population10,167 2020 Census
Where it is
Alcona on the map of Michigan
Michigan has 83 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1840 from Saginaw County, Michilimackinac County and Mackinac County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Originally named Negwegon, the county was created in 1840 from territory that included parts of Saginaw and Michilimackinac counties, and was initially attached to Mackinac County for judicial purposes. The county was renamed Alcona in 1843, and over the next several decades was successively attached to Cheboygan, Alpena, and Iosco counties for judicial and municipal purposes. Alcona was fully organized in 1869 after being detached from Iosco County, at which time Oscoda County was attached to it; Oscoda was later detached as a separate county in 1881.
- 1840Alcona County created Negwegon (now Alcona) created from Non-County Area 2 attached to Saginaw; Negwegon not fully organized, attached to Michilimackinac (now Mackinac) "for judicial purposes." · Mich. Acts 1840, ann. sess., no. 119, secs. 15, 35/pp. 198, 200
- 1843Renamed Negwegon renamed Alcona.formerly Negwegon· Mich. Acts 1843, ann. sess., no. 67/p. 145
- 1853
- 1857
- 1858
- 1869
- 1881Changed Oscoda fully organized, detached from Alcona. · Mich. Acts 1881, reg. sess., pub., no. 19/p. 16
Land and parcels
What the maps cover in Alcona
Who publishes each layer, how good it is, and when we last checked.
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Parcels Missing
No public parcel map found for Alcona County yet. Lot lines and owners of record are kept by the county (alconacountymi.com).
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Address points Missing
No public address points layer found for Alcona County yet.
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Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- Official
- from the office that keeps the record
- Good enough
- a reliable statewide or national copy
- Fallback
- a guide only; check the official record
- Missing
- nothing public found yet
People and land
Alcona by the Census
Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.
Rules and offices
Alcona County's official site
We have found the county's site but not its offices yet; start there.
County government
- County government
The official website of Alcona County.
See your own lot on these maps
Open Alcona County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.
Questions
Common questions about Alcona County
- When was Alcona County founded?
- Alcona County was founded in 1840, formed from Saginaw County, Michilimackinac County and Mackinac County.
- What is the county seat of Alcona County?
- The county seat of Alcona County is Harrisville.
- Is there an online parcel map for Alcona County?
- Not that we have found yet. Lot lines and owners of record are kept by the county assessor's office. When a public parcel map appears, it shows here.
- Has Alcona County's boundary or name changed?
- Alcona County was created in 1840 from Saginaw County, Michilimackinac County and Mackinac County. Since then the Atlas of Historical County Boundaries records 6 later changes, chiefly involving Alpena County, Cheboygan County and Iosco County. It was formerly called Negwegon.
- Is my lot in a flood zone?
- We do not have flood maps for Alcona County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby