KS · GEOID 20019

Chautauqua County area

Chautauqua County, Kansas covers 644.8 square miles: 638.9 square miles of land and 5.9 square miles of water.

Official Census measurements2026 Gazetteer · retrieved September 27, 2026
Land area638.9 mi²
Water area5.9 mi²
Total area644.8 mi²
National land rank#1489

County outline

Generalized outline of Chautauqua 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 Chautauqua County is located

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

Area breakdown

Land accounts for 99.1% of Chautauqua County’s measured area and water for 0.9%. Its combined area converts to 1,669.9 square kilometers or approximately 412,651 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land638.8811,654.694408,883.8
Water5.88615.2453,767
Total644.7671,669.939412,650.9

How Chautauqua County compares

By original Census land area, Chautauqua County ranks #78 of 105 in Kansas and #1489 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.876 times the Kansas county-equivalent median of 729.7 square miles. It accounts for 0.8% of the combined county land area in the state.

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

What stands out about Chautauqua County?

Chautauqua County has more land than 1,733 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Chautauqua County638.9 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 Chautauqua County at #1,590 nationally by total area, 101 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 0.9%, compared with a national county-equivalent median of 1.2% — 0.3 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 Chautauqua County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#1488Allamakee County, Iowa639.1Compare
#1489Chautauqua County, Kansas638.9This county
#1490Jasper County, Missouri638.5Compare

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 37.154259, -96.245396. 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: 1,654,694,141 m²; AWATER: 15,243,773 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 many acres of land are in Chautauqua County?

The land measurement converts to approximately 408,884 acres. Including water, total area is approximately 412,651 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

Download the complete CSV or JSON dataset