County Maps US

Ashtabula County, Ohio

The largest of Ohio's 88 counties by land area.

CountyFIPS 39007

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

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Population
96,713
-784 (-0.8%) since 2020
Land area
702.4
square miles. A further 48.7% of the total area is water
Population density
138
people per square mile, computed rather than published
County seat
Jefferson
Seat of county government.
Established
1811
214 years ago
Largest city
Ashtabula city
Population 17,474.

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 Ashtabula 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 Ashtabula 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 625 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 Ashtabula 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
Population96,71328th of 88647th of 3,144
Land area702.4 sq mi1st of 881,321st of 3,144
Population density138 per sq mi37th of 88735th of 3,144
Median household income$57,72874th of 882,286th of 3,143

Full data for Ashtabula County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population96,713Vintage 2025 Population Estimates
Population in 202097,497Vintage 2025 Population Estimates
2020 estimates base?97,571Vintage 2025 Population Estimates
Land area702.4 sq mi2025 Gazetteer Files
Water area665.8 sq mi2025 Gazetteer Files
Total area1,368 sq mi2025 Gazetteer Files
Population density?138 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$57,728American Community Survey 2020-2024 5-Year Estimates
Median home value$159,500American Community Survey 2020-2024 5-Year Estimates
Median age43.0American Community Survey 2020-2024 5-Year Estimates
Households39,245American Community Survey 2020-2024 5-Year Estimates
Housing units46,477American 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
-340
939 births, 1,279 deaths
Net migration
+307
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 5 areas bordering Ashtabula 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
Lake CountyOhio37 mi232,217
Erie CountyPennsylvania33 mi265,832
Trumbull CountyOhio25 mi198,972
Crawford CountyPennsylvania24 mi81,792
Geauga CountyOhio15 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.