County Maps US

Greene County, Ohio

A county in Ohio, ranked 18 of 88 by population.

CountyFIPS 39057

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

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Population
174,322
+6,181 (+3.7%) since 2020
Land area
413.6
square miles. A further 0.6% of the total area is water
Population density
421
people per square mile, computed rather than published
County seat
Xenia
Seat of county government.
Established
1803
222 years ago
Largest city
Beavercreek city
Population 48,134.

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 Greene 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 Greene 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 683 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 Greene 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
Population174,32218th of 88403rd of 3,144
Land area413.6 sq mi58th of 882,444th of 3,144
Population density421 per sq mi16th of 88332nd of 3,144
Median household income$87,3097th of 88365th of 3,143

Full data for Greene County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population174,322Vintage 2025 Population Estimates
Population in 2020168,141Vintage 2025 Population Estimates
2020 estimates base?167,972Vintage 2025 Population Estimates
Land area413.6 sq mi2025 Gazetteer Files
Water area2.6 sq mi2025 Gazetteer Files
Total area416.3 sq mi2025 Gazetteer Files
Population density?421 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$87,309American Community Survey 2020-2024 5-Year Estimates
Median home value$252,200American Community Survey 2020-2024 5-Year Estimates
Median age38.7American Community Survey 2020-2024 5-Year Estimates
Households68,166American Community Survey 2020-2024 5-Year Estimates
Housing units72,391American 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
+72
1,718 births, 1,646 deaths
Net migration
+2,115
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 Greene 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
Clark CountyOhio25 mi135,340
Montgomery CountyOhio21 mi539,598
Clinton CountyOhio16 mi42,301
Fayette CountyOhio12 mi28,552
Warren CountyOhio7.4 mi257,181
Madison CountyOhio3.9 mi46,985

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.