Noble County area

Noble County, Ohio covers 404.5 square miles: 398 square miles of land and 6.558 square miles of water. Its county seat is Caldwell. An estimated 14,276 people lived there in 2025.

Official Census measurements · GEOID 391212026 Gazetteer · retrieved September 27, 2026
Land area398 mi²
Water area6.558 mi²
Population (2025)14,276
People per mi²36

County outline

Generalized outline of Noble 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 Noble County is located

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

Area breakdown

Land accounts for 98.4% of Noble County’s measured area and water for 1.6%. Its combined area converts to 1,047.7 square kilometers or approximately 258,897 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land397.9691,030.735254,700.2
Water6.55816.9854,197.1
Total404.5271,047.72258,897.3

How Noble County compares

By original Census land area, Noble County ranks #82 of 88 in Ohio and #2535 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.913 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 Noble County

The Census Bureau estimates that 14,276 people lived in Noble County on July 1, 2025. That ranks #2,209 of 3,222 county equivalents nationally and #84 of 88 in Ohio. Since the April 1, 2020 estimates base of 14,111, the population has grown by 165 (+1.2%), compared with +0.9% for Ohio as a whole.

With 398 square miles of land, that is 36 people per square mile (14 per km²), placing Noble County #1,856 nationally for density and #84 in Ohio. The median county equivalent has 47 people per square mile; the Ohio median is 120. Put another way, there are about 18 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate14,09814,34514,36114,34214,26414,276
Change—+247+16−19−78+12

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 Noble County

6 incorporated places lie at least partly in Noble County. Together they are home to 2,634 people (18.5%); the other 11,642 (81.5%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Caldwell village, with 1,866 residents in the county.

Incorporated placePopulation 2025Since 2020Land mi²
Caldwell villageCounty seat1,866+11.2%0.918
Summerfield village240−0.8%0.371
Belle Valley village199−1%0.407
Sarahsville village1460%0.169
Batesville village102+1%0.226
Dexter City village81−1.2%0.167

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

Metropolitan area

Noble 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

15 ZIP Code Tabulation Areas have land in Noble County; 8 of them have most of their land inside the county, and the others mainly cover neighboring areas.

437114371743724437324377243773437784377943780437884571545727457444574545746

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 Noble County

Noble County shares a land border with 6 county equivalents. Each of them has more land than Noble County. The largest neighbor is Muskingum County (664.5 mi²) and the smallest is Morgan County (416.4 mi²). Together with its neighbors, Noble County forms a block of 3,621.2 mi² of land, of which it holds 11%.

Map of Noble County and the 6 county equivalents that border it Guernsey County, Ohio: 522.2 mi² landMonroe County, Ohio: 455.6 mi² landWashington County, Ohio: 632.3 mi² landMorgan County, Ohio: 416.4 mi² landBelmont County, Ohio: 532.2 mi² landMuskingum County, Ohio: 664.5 mi² land
Noble 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. NobleCompare
Muskingum County664.51.7× largerCompare
Washington County632.31.6× largerCompare
Belmont County532.21.3× largerCompare
Guernsey County522.21.3× largerCompare
Monroe County455.61.1× largerCompare
Morgan County416.4about the sameCompare

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

Noble County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.6 times as much. Ohio’s county land could hold about 103 areas the size of Noble County.

Land area: Noble County and the closest-sized states
Noble County398 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 19.9 miles (32.1 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 Noble County?

Noble County has more land than 687 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Noble County398 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 Noble County at #2,579 nationally by total area, 44 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 1.6%, compared with a national county-equivalent median of 1.2% — 0.5 percentage points higher. 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 Noble County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#2534Orange County, Indiana398.4Compare
#2535Noble County, Ohio398This county
#2536Clay County, Missouri397.7Compare

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 39.767241, -81.452544. 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: 1,030,734,320 m²; AWATER: 16,984,486 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 Noble County?

Noble County, Ohio has 398 square miles (1,030.7 km²) of land and 6.558 square miles of water, for a total area of 404.5 square miles. It ranks #2535 of 3,222 U.S. county equivalents by land area.

Is Noble County the largest county in Ohio?

No. Noble County ranks #82 of 88 in Ohio by land area. The largest is Ashtabula County, with 702.4 square miles of land.

What counties border Noble County?

Noble County shares a land border with Guernsey County, Monroe County, Washington County, Morgan County, Belmont County, and Muskingum County.

What is the population of Noble County?

The Census Bureau estimates Noble County had 14,276 residents on July 1, 2025, ranking #2,209 of 3,222 county equivalents. That is 36 people per square mile of land.

What is the county seat of Noble County?

The county seat of Noble County is Caldwell.

What cities and towns are in Noble County?

Noble County has 6 incorporated places. The most populous five are Caldwell village, Summerfield village, Belle Valley village, Sarahsville village, and Batesville village; 11,642 residents live outside any incorporated place.

Is Noble County part of a metropolitan area?

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

How many ZIP codes are in Noble County?

15 ZIP Code Tabulation Areas have land in Noble County, and 8 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

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

It has less land than every state. Rhode Island, the smallest, has 2.6 times as much land.

How many acres of land are in Noble County?

The land measurement converts to approximately 254,700 acres. Including water, total area is approximately 258,897 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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