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County · code 26149

St. Joseph CountyMichigan

St. Joseph County is a county in Michigan with its seat in Centreville, formed in 1829.

  • Founded1829
  • County seatCentreville
  • Named forSt. Joseph River, Michigan and Indiana
  • Land area501 sq mi + 20 sq mi water
  • Population60,939 2020 Census
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Updated

KalamazooCassBranch Centreville Census outline · seat marked

Where it is

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

History

Formed in 1829 from Lenawee County

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

St. Joseph County was created by Michigan Territory on October 29, 1829, from Non-County Area 1 attached to Lenawee County. The county was named after the St. Joseph River. It was fully organized on November 4, 1829, with several counties and areas attached to it for administrative and judicial purposes, but most were detached by 1830 as those counties were organized.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

  1. 1829
    St. Joseph County created St. Joseph created by Michigan Territory from Non-County Area 1 attached to Lenawee; St. Joseph not fully organized, not attached.
    from Lenawee
    · Mich. Terr. Laws, 2:sec. 11/p. 736
  2. 1829
    Changed St. Joseph fully organized. Barry, Branch, Calhoun, Eaton, and Kalamazoo all attached to St. Joseph. Part of Non-County Area 1 detached from Lenawee and part of Non-County Area 2 detached from Oakland; this became Non-County Area 5 attached to St. Joseph. All attachments were for administrative and judicial purposes.
    BarryBranchCalhounEatonKalamazooLenaweeOakland
    · Mich. Terr. Laws, 2:744-746
  3. 1830
    Changed Kalamazoo fully organized, detached from St. Joseph; Barry, Calhoun, Eaton, and Non-County Area 5 detached from St. Joseph, attached to Kalamazoo "for judicial purposes."
    KalamazooBarryCalhounEaton
    · Mich. Terr. Laws, 3:836-837
  4. 1831
    Gained territory St. Joseph gained small area from Cass.
    from Cass
    · Mich. Terr. Laws, 3:889
  5. 1833
    Changed Branch fully organized, detached from St. Joseph.
    Branch
    · Mich. Terr. Laws, 3:977

Land and parcels

What the maps cover in St. Joseph

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

St. Joseph by the Census

Population
60,939 2020 Census count
Housing units
27,081 2020 Census count
Land area
501 square miles
Water area
20 square miles
People per sq mi
122 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

St. Joseph 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

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Questions

Common questions about St. Joseph County

When was St. Joseph County founded?
St. Joseph County was founded in 1829, formed from Lenawee County, and named after St. Joseph River, Michigan and Indiana.
What is the county seat of St. Joseph County?
The county seat of St. Joseph County is Centreville.
Is there an online parcel map for St. Joseph 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 St. Joseph County's boundary or name changed?
St. Joseph County was created in 1829 from Lenawee County. Since then the Atlas of Historical County Boundaries records 4 later changes, chiefly involving Barry County, Branch County and Calhoun County.
Is my lot in a flood zone?
We do not have flood maps for St. Joseph 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