County outline
Where Comanche County is located
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
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 788.298 | 2,041.682 | 504,510.7 |
| Water | 1.392 | 3.605 | 890.9 |
| Total | 789.69 | 2,045.288 | 505,401.6 |
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.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 1,679 | 1,665 | 1,692 | 1,668 | 1,673 | 1,673 |
| Change | — | −14 | +27 | −24 | +5 | 0 |
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 place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Coldwater cityCounty seat | 679 | −1% | 2.562 |
| Protection city | 492 | −0.4% | 0.927 |
| Wilmore city | 33 | −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%.
| Bordering county equivalent | Land mi² | Size vs. Comanche | Compare |
|---|---|---|---|
| Woods CountyOklahoma | 1,286.5 | 1.6× larger | Compare |
| Barber County | 1,134.1 | 1.4× larger | Compare |
| Harper CountyOklahoma | 1,038.6 | 1.3× larger | Compare |
| Clark County | 974.6 | 1.2× larger | Compare |
| Kiowa County | 722.6 | 1.1× smaller | Compare |
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.
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.
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 rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #1092 | Butler County, Pennsylvania | 789.5 | Compare |
| #1093 | Comanche County, Kansas | 788.3 | This county |
| #1094 | Pottawatomie County, Oklahoma | 787.8 | Compare |
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.
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.