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County · code 26133

Osceola CountyMichigan

Osceola County is in Michigan and has its seat in Reed City. The county was created in 1840 as Unwattin from Michilimackinac County, then renamed Osceola in 1843.

  • Founded1840
  • County seatReed City
  • Named forOsceola
  • Land area566 sq mi + 6.7 sq mi water
  • Population22,891 2020 Census
  • Parcels mapped21,621 checked 16 October 2026
Open the free map Click any parcel in Osceola County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

MecostaLakeClare Reed City Census outline · seat marked

Where it is

Osceola on the map of Michigan

Michigan has 83 counties and county equivalents, each with its own records office. Shapes with a page are links.

Alcona CountyAlger CountyAllegan CountyAlpena CountyAntrim CountyArenac CountyBaraga CountyBarry CountyBay CountyBenzie CountyBerrien CountyBranch CountyCalhoun CountyCass CountyCharlevoix CountyCheboygan CountyChippewa CountyClare CountyClinton CountyCrawford CountyDelta CountyDickinson CountyEaton CountyEmmet CountyGenesee CountyGladwin CountyGogebic CountyGrand Traverse CountyGratiot CountyHillsdale CountyHoughton CountyHuron CountyIngham CountyIonia CountyIosco CountyIron CountyIsabella CountyJackson CountyKalamazoo CountyKalkaska CountyKent CountyKeweenaw CountyLake CountyLapeer CountyLeelanau CountyLenawee CountyLivingston CountyLuce CountyMackinac CountyMacomb CountyManistee CountyMarquette CountyMason CountyMecosta CountyMenominee CountyMidland CountyMissaukee CountyMonroe CountyMontcalm CountyMontmorency CountyMuskegon CountyNewaygo CountyOakland CountyOceana CountyOgemaw CountyOntonagon CountyOscoda CountyOtsego CountyOttawa CountyPresque Isle CountyRoscommon CountySaginaw CountySt. Clair CountySt. Joseph CountySanilac CountySchoolcraft CountyShiawassee CountyTuscola CountyVan Buren CountyWashtenaw CountyWayne CountyWexford CountyOsceola County Osceola
Counties of Michigan · Osceola highlighted

History

Formed in 1840 from Michilimackinac County, Mackinac County and Ottawa County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Osceola County was formed in 1840 from Michilimackinac County, Mackinac County and Ottawa County, and named after Osceola. Reed City is the county seat.

Deeds and plats from before 1840 for land now in Osceola County may have been recorded in Michilimackinac County, Mackinac County and Ottawa County.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

  1. 1840
    Osceola County created Unwattin (now Osceola) created from Michilimackinac (now Mackinac); Unwattin not fully organized, attached to Ottawa "for judicial purposes."
    from Michilimackinacfrom Mackinacfrom Ottawa
    · Mich. Acts 1840, ann. sess., no. 119, secs. 7, 35/pp. 197, 200
  2. 1843
    Renamed Unwattin renamed Osceola.
    formerly Unwattin
    · Mich. Acts 1843, ann. sess., no. 67/p. 145
  3. 1855
    Changed Osceola detached from Ottawa, attached to Mason "for judicial purposes."
    OttawaMason
    · Mich. Acts 1855, reg. sess., no. 171, secs. 1-3/pp. 423-424
  4. 1857
    Changed Osceola detached from Mason, attached to Newaygo "for judicial and municipal purposes."
    MasonNewaygo
    · Mich. Acts 1857, reg. sess., no. 180/p. 463
  5. 1859
    Changed Osceola detached from Newaygo, attached to Mecosta "for judicial and municipal purposes."
    NewaygoMecosta
    · Mich. Acts 1859, reg. sess., no. 99, secs. 1, 6/pp. 257-259
Show all 8 changes (3 more)
  1. 1840
    Osceola County created Unwattin (now Osceola) created from Michilimackinac (now Mackinac); Unwattin not fully organized, attached to Ottawa "for judicial purposes."
    from Michilimackinacfrom Mackinacfrom Ottawa
    · Mich. Acts 1840, ann. sess., no. 119, secs. 7, 35/pp. 197, 200
  2. 1843
    Renamed Unwattin renamed Osceola.
    formerly Unwattin
    · Mich. Acts 1843, ann. sess., no. 67/p. 145
  3. 1855
    Changed Osceola detached from Ottawa, attached to Mason "for judicial purposes."
    OttawaMason
    · Mich. Acts 1855, reg. sess., no. 171, secs. 1-3/pp. 423-424
  4. 1857
    Changed Osceola detached from Mason, attached to Newaygo "for judicial and municipal purposes."
    MasonNewaygo
    · Mich. Acts 1857, reg. sess., no. 180/p. 463
  5. 1859
    Changed Osceola detached from Newaygo, attached to Mecosta "for judicial and municipal purposes."
    NewaygoMecosta
    · Mich. Acts 1859, reg. sess., no. 99, secs. 1, 6/pp. 257-259
  6. 1869
    Changed Osceola fully organized, detached from Mecosta.
    Mecosta
    · Mich. Acts 1869, reg. sess., no. 301/p. 487
  7. 1869
    Changed Part of Lake was detached from both Mason and Mecosta, attached to Osceola "for judicial and municipal purposes."
    LakeMasonMecosta
    · Mich. Acts 1869, reg. sess., no. 308/p. 605
  8. 1871
    Changed Lake fully organized, detached from Osceola.
    Lake
    · Mich. Acts 1871, reg. sess., no. 357, secs. 1, 7/pp. 71, 73

Land and parcels

What the maps cover in Osceola

Who publishes each layer, how good it is, and when we last checked.

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

Osceola by the Census

Population
22,891 2020 Census count
Housing units
12,534 2020 Census count
Land area
566 square miles
Water area
6.7 square miles
People per sq mi
40 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Inside a city or town, permits usually come from that city rather than the county.

Permits

Zoning and code

County government

See your own lot on these maps

Open Osceola 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.

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Questions

Common questions about Osceola County

When was Osceola County founded?
Osceola County was founded in 1840, formed from Michilimackinac County, Mackinac County and Ottawa County, and named after Osceola.
What is the county seat of Osceola County?
The county seat of Osceola County is Reed City.
Is there an online parcel map for Osceola County?
Yes. Osceola County publishes a parcel map of 21,621 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Osceola County's boundary or name changed?
Osceola County was created in 1840 from Michilimackinac County, Mackinac County and Ottawa County. Since then the Atlas of Historical County Boundaries records 7 later changes, chiefly involving Mason County, Mecosta County and Lake County. It was formerly called Unwattin.
Who issues building permits in Osceola County?
The county's page on building permits: Building Permit Process. Inside a city or town, ask that city first.
Is my lot in a flood zone?
We do not have flood maps for Osceola County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door