County Maps US

Auglaize County, Ohio

A county in Ohio, ranked 53 of 88 by population.

CountyFIPS 39011

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

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Population
45,909
-557 (-1.2%) since 2020
Land area
401.4
square miles. A further 0.1% of the total area is water
Population density
114
people per square mile, computed rather than published
County seat
Wapakoneta
Seat of county government.
Established
1848
177 years ago
Largest city
Wapakoneta city
Population 9,711.

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 Auglaize 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 Auglaize 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 626 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 Auglaize 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
Population45,90953rd of 881,075th of 3,144
Land area401.4 sq mi80th of 882,520th of 3,144
Population density114 per sq mi48th of 88827th of 3,144
Median household income$78,66015th of 88640th of 3,143

Full data for Auglaize County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population45,909Vintage 2025 Population Estimates
Population in 202046,466Vintage 2025 Population Estimates
2020 estimates base?46,421Vintage 2025 Population Estimates
Land area401.4 sq mi2025 Gazetteer Files
Water area0.52 sq mi2025 Gazetteer Files
Total area401.9 sq mi2025 Gazetteer Files
Population density?114 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$78,660American Community Survey 2020-2024 5-Year Estimates
Median home value$189,800American Community Survey 2020-2024 5-Year Estimates
Median age41.0American Community Survey 2020-2024 5-Year Estimates
Households18,940American Community Survey 2020-2024 5-Year Estimates
Housing units20,056American 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
-29
492 births, 521 deaths
Net migration
0
Arrivals and departures balanced.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 6 areas bordering Auglaize 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
Shelby CountyOhio31 mi48,065
Allen CountyOhio30 mi100,881
Mercer CountyOhio24 mi42,737
Logan CountyOhio10 mi46,302
Hardin CountyOhio7.3 mi30,072
Van Wert CountyOhio3.1 mi29,013

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.