County Maps US

Macomb County, Michigan

A county in Michigan, ranked 3 of 83 by population.

CountyFIPS 26099

Within Michigan
Macomb County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Mount Clemens, the county seat, located via the 2025 Census Gazetteer.

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Population
886,221
+5,981 (+0.7%) since 2020
Land area
479.4
square miles. A further 16.0% of the total area is water
Population density
1,849
people per square mile, computed rather than published
County seat
Mount Clemens
Seat of county government.
Established
1818
207 years ago
Largest city
Warren city
Population 137,138.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Macomb County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Macomb County, Michigan from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 549 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Macomb County ranks

Position among the 83 counties of Michigan, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn MichiganNationally
Population886,2213rd of 8368th of 3,144
Land area479.4 sq mi75th of 832,157th of 3,144
Population density1,849 per sq mi2nd of 8379th of 3,144
Median household income$77,83712th of 83680th of 3,143

Full data for Macomb County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population886,221Vintage 2025 Population Estimates
Population in 2020880,240Vintage 2025 Population Estimates
2020 estimates base?881,224Vintage 2025 Population Estimates
Land area479.4 sq mi2025 Gazetteer Files
Water area91.6 sq mi2025 Gazetteer Files
Total area570.9 sq mi2025 Gazetteer Files
Population density?1,849 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$77,837American Community Survey 2020-2024 5-Year Estimates
Median home value$243,900American Community Survey 2020-2024 5-Year Estimates
Median age41.3American Community Survey 2020-2024 5-Year Estimates
Households358,668American Community Survey 2020-2024 5-Year Estimates
Housing units373,413American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-494
8,580 births, 9,074 deaths
Net migration
+4,187
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 4 areas bordering Macomb County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
St. Clair CountyMichigan42 mi160,486
Oakland CountyMichigan30 mi1,288,337
Wayne CountyMichigan17 mi1,769,038
Lapeer CountyMichigan6.1 mi89,516

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

Side by side

All 83 counties of Michigan

Open the interactive Michigan county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.