Comanche County area

Comanche County, Kansas covers 789.7 square miles: 788.3 square miles of land and 1.392 square miles of water. Its county seat is Coldwater. An estimated 1,673 people lived there in 2025.

Official Census measurements · GEOID 200332026 Gazetteer · retrieved September 27, 2026
Land area788.3 mi²
Water area1.392 mi²
Population (2025)1,673
People per mi²2.1

County outline

Generalized outline of Comanche County, Kansas
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 Comanche County is located

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

Area breakdown

Land accounts for 99.8% of Comanche County’s measured area and water for 0.2%. Its combined area converts to 2,045.3 square kilometers or approximately 505,402 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land788.2982,041.682504,510.7
Water1.3923.605890.9
Total789.692,045.288505,401.6

How Comanche County compares

By original Census land area, Comanche County ranks #48 of 105 in Kansas and #1093 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 1.08 times the Kansas county-equivalent median of 729.7 square miles. It accounts for 1% of the combined county land area in the state.

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

Population and density of Comanche County

The Census Bureau estimates that 1,673 people lived in Comanche County on July 1, 2025. That ranks #3,146 of 3,222 county equivalents nationally and #101 of 105 in Kansas. Since the April 1, 2020 estimates base of 1,686, the population has declined by 13 (−0.8%), compared with +1.3% for Kansas as a whole.

With 788.3 square miles of land, that is 2.1 people per square mile (0.82 per km²), placing Comanche County #3,053 nationally for density and #100 in Kansas. The median county equivalent has 47 people per square mile; the Kansas median is 8.1. Put another way, there are about 302 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate1,6791,6651,6921,6681,6731,673
Change—−14+27−24+50

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 Comanche County

3 incorporated places lie at least partly in Comanche County. Together they are home to 1,204 people (72%); the other 469 (28%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Coldwater city, with 679 residents in the county.

Incorporated placePopulation 2025Since 2020Land mi²
Coldwater cityCounty seat679−1%2.562
Protection city492−0.4%0.927
Wilmore city33−5.7%0.177

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

Metropolitan area

Comanche 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

3 ZIP Code Tabulation Areas have land in Comanche County, and each lies mostly inside the county.

670296712767155

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Comanche County

Comanche County shares a land border with 5 county equivalents, including 2 in Oklahoma. It has more land than 1 of them. The largest neighbor is Woods County (1,286.5 mi²) and the smallest is Kiowa County (722.6 mi²). Together with its neighbors, Comanche County forms a block of 5,944.7 mi² of land, of which it holds 13.3%.

Map of Comanche County and the 5 county equivalents that border it Kiowa County, Kansas: 722.6 mi² landBarber County, Kansas: 1,134.1 mi² landClark County, Kansas: 974.6 mi² landWoods County, Oklahoma: 1,286.5 mi² landHarper County, Oklahoma: 1,038.6 mi² land
Comanche 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. ComancheCompare
Woods CountyOklahoma1,286.51.6× largerCompare
Barber County1,134.11.4× largerCompare
Harper CountyOklahoma1,038.61.3× largerCompare
Clark County974.61.2× largerCompare
Kiowa County722.61.1× smallerCompare

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

Comanche County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.3 times as much. Kansas’s county land could hold about 104 areas the size of Comanche County.

Land area: Comanche County and the closest-sized states
Comanche County788.3 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 28.1 miles (45.2 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 Comanche County?

Comanche County has more land than 2,129 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Comanche County788.3 mi²
Kansas median729.7 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 Comanche County at #1,207 nationally by total area, 114 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 0.2%, compared with a national county-equivalent median of 1.2% — 1 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 Comanche County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#1092Butler County, Pennsylvania789.5Compare
#1093Comanche County, Kansas788.3This county
#1094Pottawatomie County, Oklahoma787.8Compare

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 37.181442, -99.251293. 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: 2,041,681,093 m²; AWATER: 3,604,155 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 Comanche County?

Comanche County, Kansas has 788.3 square miles (2,041.7 km²) of land and 1.392 square miles of water, for a total area of 789.7 square miles. It ranks #1093 of 3,222 U.S. county equivalents by land area.

Is Comanche County the largest county in Kansas?

No. Comanche County ranks #48 of 105 in Kansas by land area. The largest is Butler County, with 1,429.7 square miles of land.

What counties border Comanche County?

Comanche County shares a land border with Kiowa County, Barber County, Clark County, Woods County, Oklahoma, and Harper County, Oklahoma.

What is the population of Comanche County?

The Census Bureau estimates Comanche County had 1,673 residents on July 1, 2025, ranking #3,146 of 3,222 county equivalents. That is 2.1 people per square mile of land.

What is the county seat of Comanche County?

The county seat of Comanche County is Coldwater.

What cities and towns are in Comanche County?

Comanche County has 3 incorporated places. The most populous are Coldwater city, Protection city, and Wilmore city; 469 residents live outside any incorporated place.

Is Comanche County part of a metropolitan area?

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

How many ZIP codes are in Comanche County?

3 ZIP Code Tabulation Areas have land in Comanche County, and 3 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

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

It has less land than every state. Rhode Island, the smallest, has 1.3 times as much land.

How many acres of land are in Comanche County?

The land measurement converts to approximately 504,511 acres. Including water, total area is approximately 505,402 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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