County outline
Where Jewell County is located
Area breakdown
Land accounts for 99.5% of Jewell County’s measured area and water for 0.5%. Its combined area converts to 2,368.2 square kilometers or approximately 585,190 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 909.971 | 2,356.814 | 582,381.4 |
| Water | 4.389 | 11.367 | 2,809 |
| Total | 914.36 | 2,368.182 | 585,190.4 |
How Jewell County compares
By original Census land area, Jewell County ranks #22 of 105 in Kansas and #823 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.247 times the Kansas county-equivalent median of 729.7 square miles. It accounts for 1.1% of the combined county land area in the state.
See the complete Kansas ranking · What counts as a county equivalent?
Population and density of Jewell County
The Census Bureau estimates that 2,830 people lived in Jewell County on July 1, 2025. That ranks #3,044 of 3,222 county equivalents nationally and #82 of 105 in Kansas. Since the April 1, 2020 estimates base of 2,930, the population has declined by 100 (−3.4%), compared with +1.3% for Kansas as a whole.
With 910 square miles of land, that is 3.1 people per square mile (1.2 per km²), placing Jewell County #2,970 nationally for density and #87 in Kansas. The median county equivalent has 47 people per square mile; the Kansas median is 8.1. Put another way, there are about 206 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 2,928 | 2,944 | 2,903 | 2,880 | 2,864 | 2,830 |
| Change | — | +16 | −41 | −23 | −16 | −34 |
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 Jewell County
7 incorporated places lie at least partly in Jewell County. Together they are home to 1,556 people (55%); the other 1,274 (45%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Mankato city, with 803 residents in the county.
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Mankato cityCounty seat | 803 | −3.7% | 0.975 |
| Jewell city | 345 | −3.4% | 0.411 |
| Burr Oak city | 136 | −3.5% | 0.823 |
| Formoso city | 90 | −3.2% | 0.247 |
| Randall city | 84 | −2.3% | 0.174 |
| Esbon city | 67 | −2.9% | 0.281 |
| Webber city | 31 | −3.1% | 0.116 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Jewell County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Jewell 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
14 ZIP Code Tabulation Areas have land in Jewell County; 8 of them have most of their land inside the county, and the others mainly cover neighboring areas.
6693666939669416694266948669496695266956669636697067420674306744668978
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 Jewell County
Jewell County shares a land border with 7 county equivalents, including 2 in Nebraska. It has more land than every one of them. The largest neighbor is Smith County (895.5 mi²) and the smallest is Webster County (574.9 mi²). Together with its neighbors, Jewell County forms a block of 5,982.5 mi² of land, of which it holds 15.2%.
| Bordering county equivalent | Land mi² | Size vs. Jewell | Compare |
|---|---|---|---|
| Smith County | 895.5 | about the same | Compare |
| Osborne County | 892.5 | about the same | Compare |
| Republic County | 717.4 | 1.3× smaller | Compare |
| Cloud County | 715.3 | 1.3× smaller | Compare |
| Mitchell County | 701.8 | 1.3× smaller | Compare |
| Nuckolls CountyNebraska | 575.2 | 1.6× smaller | Compare |
| Webster CountyNebraska | 574.9 | 1.6× smaller | Compare |
How big is Jewell County compared with U.S. states?
Jewell County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.1 times as much. Kansas’s county land could hold about 90 areas the size of Jewell County.
Another way to picture it: the same land area would fill a square about 30.2 miles (48.5 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 Jewell County?
Jewell County has more land than 2,399 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 Jewell County at #918 nationally by total area, 95 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 0.5%, compared with a national county-equivalent median of 1.2% — 0.7 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 Jewell County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #822 | King County, Texas | 910.9 | Compare |
| #823 | Jewell County, Kansas | 910 | This county |
| #824 | Armstrong County, Texas | 909.1 | 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 39.777005, -98.222619. 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: 2,356,813,567 m²; AWATER: 11,367,163 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 Jewell County?
Jewell County, Kansas has 910 square miles (2,356.8 km²) of land and 4.389 square miles of water, for a total area of 914.4 square miles. It ranks #823 of 3,222 U.S. county equivalents by land area.
Is Jewell County the largest county in Kansas?
No. Jewell County ranks #22 of 105 in Kansas by land area. The largest is Butler County, with 1,429.7 square miles of land.
What counties border Jewell County?
Jewell County shares a land border with Smith County, Mitchell County, Republic County, Nuckolls County, Nebraska, Webster County, Nebraska, Cloud County, and Osborne County.
What is the population of Jewell County?
The Census Bureau estimates Jewell County had 2,830 residents on July 1, 2025, ranking #3,044 of 3,222 county equivalents. That is 3.1 people per square mile of land.
What is the county seat of Jewell County?
The county seat of Jewell County is Mankato.
What cities and towns are in Jewell County?
Jewell County has 7 incorporated places. The most populous five are Mankato city, Jewell city, Burr Oak city, Formoso city, and Randall city; 1,274 residents live outside any incorporated place.
Is Jewell County part of a metropolitan area?
No. Jewell County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Jewell County?
14 ZIP Code Tabulation Areas have land in Jewell 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 Jewell County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 1.1 times as much land.
How many acres of land are in Jewell County?
The land measurement converts to approximately 582,381 acres. Including water, total area is approximately 585,190 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.