County Maps US

Lenawee County, Michigan

A county in Michigan, ranked 21 of 83 by population.

CountyFIPS 26091

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

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Population
97,779
-1,569 (-1.6%) since 2020
Land area
749.7
square miles. A further 1.5% of the total area is water
Population density
130
people per square mile, computed rather than published
County seat
Adrian
Seat of county government.
Established
1822
203 years ago
Largest city
Adrian city
Population 20,191.

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 Lenawee 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 Lenawee 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 800 by 687 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 Lenawee 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
Population97,77921st of 83639th of 3,144
Land area749.7 sq mi23rd of 831,176th of 3,144
Population density130 per sq mi25th of 83759th of 3,144
Median household income$70,51823rd of 831,160th of 3,143

Full data for Lenawee County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population97,779Vintage 2025 Population Estimates
Population in 202099,348Vintage 2025 Population Estimates
2020 estimates base?99,434Vintage 2025 Population Estimates
Land area749.7 sq mi2025 Gazetteer Files
Water area11.7 sq mi2025 Gazetteer Files
Total area761.4 sq mi2025 Gazetteer Files
Population density?130 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$70,518American Community Survey 2020-2024 5-Year Estimates
Median home value$196,800American Community Survey 2020-2024 5-Year Estimates
Median age42.4American Community Survey 2020-2024 5-Year Estimates
Households38,871American Community Survey 2020-2024 5-Year Estimates
Housing units43,761American 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
-262
838 births, 1,100 deaths
Net migration
+213
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 6 areas bordering Lenawee 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
Hillsdale CountyMichigan25 mi45,738
Fulton CountyOhio25 mi41,853
Monroe CountyMichigan25 mi156,004
Washtenaw CountyMichigan19 mi370,214
Jackson CountyMichigan12 mi159,552
Lucas CountyOhio6.1 mi423,347

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

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.