County outline
Where Cowley County is located
Area breakdown
Land accounts for 99.4% of Cowley County’s measured area and water for 0.6%. Its combined area converts to 2,933 square kilometers or approximately 724,753 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 1,125.738 | 2,915.648 | 720,472.3 |
| Water | 6.688 | 17.322 | 4,280.3 |
| Total | 1,132.426 | 2,932.97 | 724,752.6 |
How Cowley County compares
By original Census land area, Cowley County ranks #7 of 105 in Kansas and #558 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.543 times the Kansas county-equivalent median of 729.7 square miles. It accounts for 1.4% of the combined county land area in the state.
See the complete Kansas ranking · What counts as a county equivalent?
Population and density of Cowley County
The Census Bureau estimates that 34,382 people lived in Cowley County on July 1, 2025. That ranks #1,362 of 3,222 county equivalents nationally and #15 of 105 in Kansas. Since the April 1, 2020 estimates base of 34,546, the population has declined by 164 (−0.5%), compared with +1.3% for Kansas as a whole.
With 1,125.7 square miles of land, that is 31 people per square mile (12 per km²), placing Cowley County #1,991 nationally for density and #26 in Kansas. The median county equivalent has 47 people per square mile; the Kansas median is 8.1. Put another way, there are about 21 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 34,528 | 34,623 | 34,447 | 34,204 | 34,251 | 34,382 |
| Change | — | +95 | −176 | −243 | +47 | +131 |
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 Cowley County
9 incorporated places lie at least partly in Cowley County. Together they are home to 25,608 people (74.5%); the other 8,774 (25.5%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Arkansas City city, with 11,800 residents in the county. The county seat, Winfield city, has 11,745 residents. By land, Winfield city is the largest at 11.1 mi².
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Arkansas City city | 11,800 | −1.4% | 9.488 |
| Winfield cityCounty seat | 11,745 | −0.3% | 11.1 |
| Udall city | 645 | −2.3% | 0.545 |
| Burden city | 509 | −0.6% | 0.517 |
| Parkerfield city | 410 | +0.7% | 0.913 |
| Dexter city | 233 | +3.6% | 0.277 |
| Atlanta city | 163 | −2.4% | 0.479 |
| Cambridge city | 92 | −1.1% | 0.175 |
| Geuda Springs cityAlso in 1 other county | 11 | +10% | 0.344 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Cowley County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Cowley County is a central county of the Arkansas City-Winfield, KS Micropolitan Statistical Area. Cowley County is the area’s only county equivalent, so the micro area has the same 1,125.7 square miles of land. By combined land it ranks #152 of 542 micropolitan areas, and #399 by population. It belongs to the Wichita-Arkansas City-Winfield, KS Combined Statistical Area.
ZIP codes
15 ZIP Code Tabulation Areas have land in Cowley County; 9 of them have most of their land inside the county, and the others mainly cover neighboring areas.
670056700867019670236702467038670396705167072671026711067119671316714667156
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 Cowley County
Cowley County shares a land border with 6 county equivalents, including 2 in Oklahoma. It has more land than 3 of them. The largest neighbor is Osage County (2,246.7 mi²) and the smallest is Chautauqua County (638.9 mi²). Together with its neighbors, Cowley County forms a block of 8,186.6 mi² of land, of which it holds 13.8%.
| Bordering county equivalent | Land mi² | Size vs. Cowley | Compare |
|---|---|---|---|
| Osage CountyOklahoma | 2,246.7 | 2× larger | Compare |
| Butler County | 1,429.7 | 1.3× larger | Compare |
| Sumner County | 1,181.7 | about the same | Compare |
| Kay CountyOklahoma | 919.6 | 1.2× smaller | Compare |
| Elk County | 644.3 | 1.7× smaller | Compare |
| Chautauqua County | 638.9 | 1.8× smaller | Compare |
How big is Cowley County compared with U.S. states?
Cowley County has more land than 1 of the 50 states. It is about 1.1 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.7 times as much land (1,948.6 mi²). Kansas’s county land could hold about 73 areas the size of Cowley County.
Another way to picture it: the same land area would fill a square about 33.6 miles (54 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 Cowley County?
Cowley County has more land than 2,664 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 Cowley County at #642 nationally by total area, 84 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 0.6%, compared with a national county-equivalent median of 1.2% — 0.6 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 Cowley County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #557 | Edmunds County, South Dakota | 1,126 | Compare |
| #558 | Cowley County, Kansas | 1,125.7 | This county |
| #559 | Morrison County, Minnesota | 1,125.1 | 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 37.234507, -96.837247. 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: 2,915,648,167 m²; AWATER: 17,322,935 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 Cowley County?
Cowley County, Kansas has 1,125.7 square miles (2,915.6 km²) of land and 6.688 square miles of water, for a total area of 1,132.4 square miles. It ranks #558 of 3,222 U.S. county equivalents by land area.
Is Cowley County the largest county in Kansas?
No. Cowley County ranks #7 of 105 in Kansas by land area. The largest is Butler County, with 1,429.7 square miles of land.
What counties border Cowley County?
Cowley County shares a land border with Butler County, Sumner County, Kay County, Oklahoma, Chautauqua County, Elk County, and Osage County, Oklahoma.
What is the population of Cowley County?
The Census Bureau estimates Cowley County had 34,382 residents on July 1, 2025, ranking #1,362 of 3,222 county equivalents. That is 31 people per square mile of land.
What is the county seat of Cowley County?
The county seat of Cowley County is Winfield.
What cities and towns are in Cowley County?
Cowley County has 9 incorporated places. The most populous five are Arkansas City city, Winfield city, Udall city, Burden city, and Parkerfield city; 8,774 residents live outside any incorporated place.
Is Cowley County part of a metropolitan area?
Yes. It is a central county of the Arkansas City-Winfield, KS Micropolitan Statistical Area.
How many ZIP codes are in Cowley County?
15 ZIP Code Tabulation Areas have land in Cowley County, and 9 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Cowley County compare with U.S. states?
It has more land than 1 of the 50 states, including Rhode Island (1,033.9 square miles of land).
How many acres of land are in Cowley County?
The land measurement converts to approximately 720,472 acres. Including water, total area is approximately 724,753 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.