County Maps US

Hillsdale County, Michigan

A county in Michigan, ranked 38 of 83 by population.

CountyFIPS 26059

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

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Population
45,738
-2 (0%) since 2020
Land area
598.2
square miles. A further 1.5% of the total area is water
Population density
76.5
people per square mile, computed rather than published
County seat
Hillsdale
Seat of county government.
Established
1835
190 years ago
Largest city
Hillsdale city
Population 8,002.

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 Hillsdale 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 Hillsdale 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 743 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 Hillsdale 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
Population45,73838th of 831,082nd of 3,144
Land area598.2 sq mi36th of 831,629th of 3,144
Population density76.5 per sq mi35th of 831,114th of 3,144
Median household income$64,24239th of 831,687th of 3,143

Full data for Hillsdale County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population45,738Vintage 2025 Population Estimates
Population in 202045,740Vintage 2025 Population Estimates
2020 estimates base?45,757Vintage 2025 Population Estimates
Land area598.2 sq mi2025 Gazetteer Files
Water area8.8 sq mi2025 Gazetteer Files
Total area607 sq mi2025 Gazetteer Files
Population density?76.5 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$64,242American Community Survey 2020-2024 5-Year Estimates
Median home value$176,100American Community Survey 2020-2024 5-Year Estimates
Median age43.1American Community Survey 2020-2024 5-Year Estimates
Households17,860American Community Survey 2020-2024 5-Year Estimates
Housing units21,515American 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
-28
513 births, 541 deaths
Net migration
+70
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 7 areas bordering Hillsdale 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
Lenawee CountyMichigan25 mi97,779
Branch CountyMichigan22 mi45,993
Williams CountyOhio21 mi36,549
Jackson CountyMichigan18 mi159,552
Calhoun CountyMichigan6.0 mi133,408
Steuben CountyIndiana5.4 mi34,799
Fulton CountyOhio2.0 mi41,853

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.