County Maps US

Monroe County, Ohio

A county in Ohio, ranked 87 of 88 by population.

CountyFIPS 39111

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

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Population
12,994
-356 (-2.7%) since 2020
Land area
455.6
square miles. A further 0.4% of the total area is water
Population density
28.5
people per square mile, computed rather than published
County seat
Woodsfield
Seat of county government.
Established
1813
212 years ago
Largest city
Woodsfield village
Population 2,127.

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 Monroe 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 Monroe 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 700 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 Monroe 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
Population12,99487th of 882,221st of 3,144
Land area455.6 sq mi40th of 882,250th of 3,144
Population density28.5 per sq mi88th of 881,969th of 3,144
Median household income$60,13465th of 882,071st of 3,143

Full data for Monroe County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population12,994Vintage 2025 Population Estimates
Population in 202013,350Vintage 2025 Population Estimates
2020 estimates base?13,381Vintage 2025 Population Estimates
Land area455.6 sq mi2025 Gazetteer Files
Water area1.7 sq mi2025 Gazetteer Files
Total area457.3 sq mi2025 Gazetteer Files
Population density?28.5 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$60,134American Community Survey 2020-2024 5-Year Estimates
Median home value$142,700American Community Survey 2020-2024 5-Year Estimates
Median age46.3American Community Survey 2020-2024 5-Year Estimates
Households5,651American Community Survey 2020-2024 5-Year Estimates
Housing units7,132American 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
-94
91 births, 185 deaths
Net migration
+22
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 6 areas bordering Monroe 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
Noble CountyOhio24 mi14,276
Belmont CountyOhio22 mi64,434
Washington CountyOhio18 mi58,389
Wetzel CountyWest Virginia12 mi13,734
Marshall CountyWest Virginia11 mi29,159
Tyler CountyWest Virginia7.0 mi7,881

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.