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County · code 26099

Macomb CountyMichigan

Macomb County is a county in Michigan with its seat in Mount Clemens, formed on January 15, 1818.

  • Founded1818
  • County seatMount Clemens
  • Named forAlexander Macomb
  • Land area479 sq mi + 92 sq mi water
  • Population881,217 2020 Census
  • Parcels mapped332,993 checked 16 October 2026
Open the free map Click any parcel in Macomb County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

St. ClairOaklandLapeerWayne Mount Clemens Census outline · seat marked

Where it is

Macomb 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 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 CountyMacomb County Macomb
Counties of Michigan · Macomb highlighted

History

Formed in 1818 from Wayne County

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

Macomb County was created by Michigan Territory from Wayne County on January 15, 1818. The county was named after Alexander Macomb. Macomb lost territory to the creation of Oakland County in 1820 and to the creation of St. Clair County in 1821, but gained territory back from St. Clair County in 1822 and again in 1833.

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

  1. 1818
    Macomb County created Macomb created by Michigan Territory from Wayne (District boundaries remained unchanged).
    from Wayne
    · Terr. Papers U.S., 10:772
  2. 1820
    Lost territory Macomb lost to creation of Oakland.
    to Oakland
    · Terr. Papers U.S., 10:842, 11:40
  3. 1821
    Lost territory Macomb lost to creation of St. Clair.
    to St. Clair
    · Terr. Papers U.S., 11:39-40, 133
  4. 1822
    Gained territory Macomb gained from St. Clair.
    from St. Clair
    · Terr. Papers U.S., 11:308-313
  5. 1833
    Gained territory Macomb gained from St. Clair.
    from St. Clair
    · Mich. Terr. Laws, 3:926

Land and parcels

What the maps cover in Macomb

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

Macomb by the Census

Population
881,217 2020 Census count
Housing units
369,404 2020 Census count
Land area
479 square miles
Water area
92 square miles
People per sq mi
1,838 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

Macomb 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 Macomb 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 Macomb County

When was Macomb County founded?
Macomb County was founded in 1818, formed from Wayne County, and named after Alexander Macomb.
What is the county seat of Macomb County?
The county seat of Macomb County is Mount Clemens.
Is there an online parcel map for Macomb County?
Yes. Macomb County publishes a parcel map of 332,993 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Macomb County's boundary or name changed?
Macomb County was created in 1818 from Wayne County. Since then the Atlas of Historical County Boundaries records 4 later changes, chiefly involving St. Clair County and Oakland County.
Is my lot in a flood zone?
We do not have flood maps for Macomb 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