Holmes County area

Holmes County, Ohio covers 424 square miles: 422.6 square miles of land and 1.426 square miles of water. Its county seat is Millersburg. An estimated 44,970 people lived there in 2025.

Official Census measurements · GEOID 390752026 Gazetteer · retrieved September 27, 2026
Land area422.6 mi²
Water area1.426 mi²
Population (2025)44,970
People per mi²106

County outline

Generalized outline of Holmes County, Ohio
2025 Census cartographic boundary, fitted to this frame. County maps are not at a common scale. The 2026 area measurements below come from the separate Gazetteer release. Map source and limitations.

Where Holmes County is located

Holmes County highlighted on a map of all U.S. county equivalents. About the maps

Area breakdown

Land accounts for 99.7% of Holmes County’s measured area and water for 0.3%. Its combined area converts to 1,098.3 square kilometers or approximately 271,386 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land422.6141,094.565270,473
Water1.4263.693912.6
Total424.041,098.259271,385.6

How Holmes County compares

By original Census land area, Holmes County ranks #50 of 88 in Ohio and #2398 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.969 times the Ohio county-equivalent median of 436 square miles. It accounts for 1% of the combined county land area in the state.

See the complete Ohio ranking · What counts as a county equivalent?

Population and density of Holmes County

The Census Bureau estimates that 44,970 people lived in Holmes County on July 1, 2025. That ranks #1,114 of 3,222 county equivalents nationally and #54 of 88 in Ohio. Since the April 1, 2020 estimates base of 44,223, the population has grown by 747 (+1.7%), compared with +0.9% for Ohio as a whole.

With 422.6 square miles of land, that is 106 people per square mile (41 per km²), placing Holmes County #943 nationally for density and #50 in Ohio. The median county equivalent has 47 people per square mile; the Ohio median is 120. Put another way, there are about 6 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate44,23944,38144,36144,40744,74344,970
Change—+142−20+46+336+227

U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.

Cities and towns in Holmes County

7 incorporated places lie at least partly in Holmes County. Together they are home to 5,143 people (11.4%); the other 39,827 (88.6%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Millersburg village, with 3,295 residents in the county. By land, Loudonville village is the largest at 2.722 mi² across all its counties.

Incorporated placePopulation 2025Since 2020Land mi²
Millersburg villageCounty seat3,295+4.2%2.564
Killbuck village816+1.1%0.361
Holmesville village377+0.5%0.223
Glenmont village238+1.7%0.281
Nashville village186+2.2%0.069
Baltic villageAlso in 2 other counties160−0.6%0.901
Loudonville villageAlso in 1 other county71+1.4%2.722

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Holmes County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Holmes County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.

ZIP codes

19 ZIP Code Tabulation Areas have land in Holmes County; 14 of them have most of their land inside the county, and the others mainly cover neighboring areas.

43006438044461044611446244462744628446334463744638446544466044661446764468144687446894469044842

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Holmes County

Holmes County shares a land border with 6 county equivalents. Each of them has more land than Holmes County. The largest neighbor is Stark County (574.9 mi²) and the smallest is Ashland County (423 mi²). Together with its neighbors, Holmes County forms a block of 3,632.6 mi² of land, of which it holds 11.6%.

Map of Holmes County and the 6 county equivalents that border it Wayne County, Ohio: 555 mi² landCoshocton County, Ohio: 563.9 mi² landTuscarawas County, Ohio: 567.6 mi² landAshland County, Ohio: 423 mi² landKnox County, Ohio: 525.5 mi² landStark County, Ohio: 574.9 mi² land
Holmes County (dark) and its bordering county equivalents. Select a neighbor to open its profile. Drawn from the 2025 Census cartographic boundaries in an equal-area projection. How borders are determined.
Bordering county equivalentLand mi²Size vs. HolmesCompare
Stark County574.91.4× largerCompare
Tuscarawas County567.61.3× largerCompare
Coshocton County563.91.3× largerCompare
Wayne County5551.3× largerCompare
Knox County525.51.2× largerCompare
Ashland County423about the sameCompare

How big is Holmes County compared with U.S. states?

Holmes County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.4 times as much. Ohio’s county land could hold about 97 areas the size of Holmes County.

Land area: Holmes County and the closest-sized states
Holmes County422.6 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 20.6 miles (33.1 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.

State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.

What stands out about Holmes County?

Holmes County has more land than 824 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Holmes County422.6 mi²
Ohio median436 mi²
National median604.5 mi²

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Holmes County at #2,471 nationally by total area, 73 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.

Its water share is 0.3%, compared with a national county-equivalent median of 1.2% — 0.8 percentage points lower. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Holmes County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#2397Boone County, Indiana422.9Compare
#2398Holmes County, Ohio422.6This county
#2399Allegany County, Maryland422.2Compare

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.

Representative coordinates

The Census internal point is 40.565618, -81.930019. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.

Source and precision

U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 1,094,566,302 m²; AWATER: 3,694,364 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.

Download the official county source ZIP ↗ · Methodology

Common questions

How big is Holmes County?

Holmes County, Ohio has 422.6 square miles (1,094.6 km²) of land and 1.426 square miles of water, for a total area of 424 square miles. It ranks #2398 of 3,222 U.S. county equivalents by land area.

Is Holmes County the largest county in Ohio?

No. Holmes County ranks #50 of 88 in Ohio by land area. The largest is Ashtabula County, with 702.4 square miles of land.

What counties border Holmes County?

Holmes County shares a land border with Wayne County, Coshocton County, Tuscarawas County, Ashland County, Knox County, and Stark County.

What is the population of Holmes County?

The Census Bureau estimates Holmes County had 44,970 residents on July 1, 2025, ranking #1,114 of 3,222 county equivalents. That is 106 people per square mile of land.

What is the county seat of Holmes County?

The county seat of Holmes County is Millersburg.

What cities and towns are in Holmes County?

Holmes County has 7 incorporated places. The most populous five are Millersburg village, Killbuck village, Holmesville village, Glenmont village, and Nashville village; 39,827 residents live outside any incorporated place.

Is Holmes County part of a metropolitan area?

No. Holmes County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.

How many ZIP codes are in Holmes County?

19 ZIP Code Tabulation Areas have land in Holmes County, and 14 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

How does Holmes County compare with U.S. states?

It has less land than every state. Rhode Island, the smallest, has 2.4 times as much land.

How many acres of land are in Holmes County?

The land measurement converts to approximately 270,473 acres. Including water, total area is approximately 271,386 acres. One square mile equals 640 acres.

Why might another source show a different area?

Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.

Can this establish a property boundary?

No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.

Cite this county

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