County Maps US

Lake County, Ohio

A county in Ohio, ranked 12 of 88 by population.

CountyFIPS 39085

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

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Population
232,217
-300 (-0.1%) since 2020
Land area
229.4
square miles. A further 76.6% of the total area is water
Population density
1,012
people per square mile, computed rather than published
County seat
Painesville
Seat of county government.
Established
1840
185 years ago
Largest city
Mentor city
Population 47,010.

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 Lake 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 Lake County, Ohio 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 643 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 Lake County ranks

Position among the 88 counties of Ohio, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn OhioNationally
Population232,21712th of 88311th of 3,144
Land area229.4 sq mi88th of 882,954th of 3,144
Population density1,012 per sq mi7th of 88158th of 3,144
Median household income$80,92513th of 88542nd of 3,143

Full data for Lake County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population232,217Vintage 2025 Population Estimates
Population in 2020232,517Vintage 2025 Population Estimates
2020 estimates base?232,517Vintage 2025 Population Estimates
Land area229.4 sq mi2025 Gazetteer Files
Water area749.9 sq mi2025 Gazetteer Files
Total area979.3 sq mi2025 Gazetteer Files
Population density?1,012 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$80,925American Community Survey 2020-2024 5-Year Estimates
Median home value$214,100American Community Survey 2020-2024 5-Year Estimates
Median age44.1American Community Survey 2020-2024 5-Year Estimates
Households101,144American Community Survey 2020-2024 5-Year Estimates
Housing units106,331American 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
-612
2,082 births, 2,694 deaths
Net migration
+675
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 3 areas bordering Lake 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
Cuyahoga CountyOhio41 mi1,232,925
Ashtabula CountyOhio37 mi96,713
Geauga CountyOhio30 mi95,676

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

All 88 counties of Ohio

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

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