County Maps US

Wyandot County, Ohio

A county in Ohio, ranked 82 of 88 by population.

CountyFIPS 39175

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

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Population
21,567
-311 (-1.4%) since 2020
Land area
406.9
square miles. A further 0.2% of the total area is water
Population density
53.0
people per square mile, computed rather than published
County seat
Upper Sandusky
Seat of county government.
Established
1845
180 years ago
Largest city
Upper Sandusky city
Population 6,661.

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 Wyandot 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 Wyandot 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 799 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 Wyandot 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
Population21,56782nd of 881,746th of 3,144
Land area406.9 sq mi69th of 882,489th of 3,144
Population density53.0 per sq mi80th of 881,416th of 3,144
Median household income$69,76840th of 881,211th of 3,143

Full data for Wyandot County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population21,567Vintage 2025 Population Estimates
Population in 202021,878Vintage 2025 Population Estimates
2020 estimates base?21,908Vintage 2025 Population Estimates
Land area406.9 sq mi2025 Gazetteer Files
Water area0.69 sq mi2025 Gazetteer Files
Total area407.6 sq mi2025 Gazetteer Files
Population density?53.0 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$69,768American Community Survey 2020-2024 5-Year Estimates
Median home value$163,400American Community Survey 2020-2024 5-Year Estimates
Median age41.7American Community Survey 2020-2024 5-Year Estimates
Households8,999American Community Survey 2020-2024 5-Year Estimates
Housing units9,892American 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
-26
228 births, 254 deaths
Net migration
+35
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 Wyandot 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
Crawford CountyOhio20 mi41,896
Marion CountyOhio17 mi65,115
Hancock CountyOhio17 mi75,034
Seneca CountyOhio16 mi54,522
Hardin CountyOhio14 mi30,072

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.