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County · code 26073

Isabella CountyMichigan

Isabella County is a county in Michigan with its seat in Mount Pleasant. The county was created on March 2, 1831, from Michilimackinac County.

  • Founded1831
  • County seatMount Pleasant
  • Named forIsabella I of Castile
  • Land area573 sq mi + 5 sq mi water
  • Population64,394 2020 Census
Open the free map Click any parcel in Isabella County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

ClareMidlandMecosta Mount Pleasant Census outline · seat marked

Where it is

Isabella 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 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 CountyOsceola CountyOscoda CountyOtsego CountyOttawa CountyPresque Isle CountyRoscommon CountySaginaw CountySt. Clair CountySt. Joseph CountySanilac CountySchoolcraft CountyShiawassee CountyTuscola CountyVan Buren CountyWashtenaw CountyWayne CountyWexford CountyIsabella County Isabella
Counties of Michigan · Isabella highlighted

History

Formed in 1831 from Michilimackinac County, Mackinac County and Kalamazoo County

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

Isabella County was created by Michigan Territory on March 2, 1831, from Michilimackinac County, though it was not fully organized at the time. The county was named after Isabella I of Castile. Isabella was attached to Saginaw County in 1836 for judicial purposes, then saw several boundary changes over the following decades as parts were attached to or detached from neighboring counties including Ionia, Midland, and Clare. Isabella was fully organized on February 11, 1859, when it was detached from Midland County.

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

  1. 1831
    Isabella County created Isabella created by Michigan Territory from Michilimackinac (now Mackinac) and Non-County Area 5 attached to Kalamazoo; Isabella not fully organized, not attached.
    from Michilimackinacfrom Mackinacfrom Kalamazoo
    · Mich. Terr. Laws, 3:sec. 13/p. 873
  2. 1836
    Changed Isabella attached to Saginaw "for judicial purposes."
    Saginaw
    · Mich. Acts 1836, ann. sess., p. 67
  3. 1837
    Changed Part of Isabella detached from Saginaw, attached to Ionia "for judicial purposes."
    SaginawIonia
    · Mich. Acts 1837, ann. sess., no. 51/p. 97
  4. 1840
    Changed Isabella detached from Ionia, re-attached to Saginaw "for judicial purposes."
    IoniaSaginaw
    · Mich. Acts 1840, ann. sess., no. 119, secs. 1, 4, 33-35/pp. 196, 200
  5. 1855
    Changed Isabella detached from Saginaw, attached to Midland and indirectly through Midland to Saginaw "for judicial and municipal purposes."
    SaginawMidland
    · Mich. Acts 1855, reg. sess., no. 98/p. 231
Show all 9 changes (4 more)
  1. 1831
    Isabella County created Isabella created by Michigan Territory from Michilimackinac (now Mackinac) and Non-County Area 5 attached to Kalamazoo; Isabella not fully organized, not attached.
    from Michilimackinacfrom Mackinacfrom Kalamazoo
    · Mich. Terr. Laws, 3:sec. 13/p. 873
  2. 1836
    Changed Isabella attached to Saginaw "for judicial purposes."
    Saginaw
    · Mich. Acts 1836, ann. sess., p. 67
  3. 1837
    Changed Part of Isabella detached from Saginaw, attached to Ionia "for judicial purposes."
    SaginawIonia
    · Mich. Acts 1837, ann. sess., no. 51/p. 97
  4. 1840
    Changed Isabella detached from Ionia, re-attached to Saginaw "for judicial purposes."
    IoniaSaginaw
    · Mich. Acts 1840, ann. sess., no. 119, secs. 1, 4, 33-35/pp. 196, 200
  5. 1855
    Changed Isabella detached from Saginaw, attached to Midland and indirectly through Midland to Saginaw "for judicial and municipal purposes."
    SaginawMidland
    · Mich. Acts 1855, reg. sess., no. 98/p. 231
  6. 1855
    Changed Midland fully organized, detached from Saginaw; Isabella remained attached to Midland "for judicial and municipal purposes," but was no longer indirectly attached to Saginaw.
    MidlandSaginaw
    · Mich. Acts 1855, reg. sess., no. 36/p. 48
  7. 1859
    Changed Isabella fully organized, detached from Midland. Clare detached from Midland, attached to Isabella "for judicial and municipal purposes."
    MidlandClare
    · Mich. Acts 1859, reg. sess., no. 118/p. 318
  8. 1869
    Changed Part of Clare was detached from Isabella, attached to Mecosta "for judicial and other purposes."
    ClareMecosta
    · Mich. Acts 1869, reg. sess., no. 320/p. 621
  9. 1871
    Changed Clare fully organized, detached from Isabella.
    Clare
    · Mich. Acts 1871, reg. sess., no. 345/p. 59

Land and parcels

What the maps cover in Isabella

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

Isabella by the Census

Population
64,394 2020 Census count
Housing units
28,489 2020 Census count
Land area
573 square miles
Water area
5 square miles
People per sq mi
112 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

Isabella County's official site

We have found the county's site but not its offices yet; start there.

County government

See your own lot on these maps

Open Isabella 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 Isabella County

When was Isabella County founded?
Isabella County was founded in 1831, formed from Michilimackinac County, Mackinac County and Kalamazoo County, and named after Isabella I of Castile.
What is the county seat of Isabella County?
The county seat of Isabella County is Mount Pleasant.
Is there an online parcel map for Isabella 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 Isabella County's boundary or name changed?
Isabella County was created in 1831 from Michilimackinac County, Mackinac County and Kalamazoo County. Since then the Atlas of Historical County Boundaries records 8 later changes, chiefly involving Saginaw County, Clare County and Midland County.
Is my lot in a flood zone?
We do not have flood maps for Isabella 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