County outline
Where Calumet County is located
Area breakdown
Land accounts for 80.1% of Calumet County’s measured area and water for 19.9%. Its combined area converts to 1,028.4 square kilometers or approximately 254,129 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 318.25 | 824.264 | 203,680 |
| Water | 78.827 | 204.161 | 50,449.3 |
| Total | 397.077 | 1,028.425 | 254,129.3 |
How Calumet County compares
By original Census land area, Calumet County ranks #68 of 72 in Wisconsin and #2769 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.423 times the Wisconsin county-equivalent median of 753 square miles. It accounts for 0.6% of the combined county land area in the state.
See the complete Wisconsin ranking · What counts as a county equivalent?
Population and density of Calumet County
The Census Bureau estimates that 53,982 people lived in Calumet County on July 1, 2025. That ranks #977 of 3,222 county equivalents nationally and #27 of 72 in Wisconsin. Since the April 1, 2020 estimates base of 52,440, the population has grown by 1,542 (+2.9%), compared with +1.3% for Wisconsin as a whole.
With 318.3 square miles of land, that is 170 people per square mile (65 per km²), placing Calumet County #706 nationally for density and #16 in Wisconsin. The median county equivalent has 47 people per square mile; the Wisconsin median is 51. Put another way, there are about 3.8 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 52,475 | 52,576 | 52,795 | 53,414 | 53,764 | 53,982 |
| Change | — | +101 | +219 | +619 | +350 | +218 |
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 Calumet County
Calumet County is divided into 21 cities and towns. In Wisconsin, county subdivisions are local governments, and together they cover all of the county’s land and residents.
The most populous is Harrison village, with 14,492 residents (26.8% of the county). The largest by land is Brothertown town, at 36.7 mi², or 11.5% of the county’s land. The county seat, Chilton city, has 4,183 residents. Among those with at least 1,000 residents in 2020, Harrison village grew fastest since then (+16.7%).
| County subdivision | Population 2025 | Since 2020 | Land mi² | Share of county land |
|---|---|---|---|---|
| Harrison village | 14,492 | +16.7% | 31.9 | 10% |
| Appleton city | 10,792 | −4.6% | 3.282 | 1% |
| Chilton cityCounty seat | 4,183 | +2.4% | 4.04 | 1.3% |
| Brillion city | 3,327 | +2.1% | 3.09 | 1% |
| Sherwood village | 3,311 | +1.1% | 3.461 | 1.1% |
| Menasha city | 3,232 | +7.8% | 1.533 | 0.5% |
| New Holstein city | 3,040 | −4.8% | 2.509 | 0.8% |
| Brillion town | 1,644 | −0.7% | 32.9 | 10.3% |
| New Holstein town | 1,490 | −3.3% | 31.5 | 9.9% |
| Stockbridge town | 1,419 | −1.9% | 33.6 | 10.5% |
| Brothertown town | 1,282 | −3.4% | 36.7 | 11.5% |
| Hilbert village | 1,237 | −0.8% | 1.474 | 0.5% |
| Chilton townCounty seat | 1,008 | −4.6% | 32.4 | 10.2% |
| Woodville town | 822 | −3.1% | 32.6 | 10.2% |
| Rantoul town | 737 | 0% | 31.8 | 10% |
Show the other 6 subdivisions
| Name | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Charlestown town | 735 | −4.4% | 31.3 |
| Stockbridge village | 654 | −4.2% | 3.28 |
| Kiel city | 345 | −0.6% | 0.417 |
| Potter village | 232 | −5.3% | 0.505 |
| Harrison town | 0 | — | 0.01 |
| Kaukauna city | 0 | — | 0.015 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each subdivision inside Calumet County. Land: 2026 Census Gazetteer. How communities are listed.
Metropolitan area
Calumet County is a central county of the Appleton, WI Metropolitan Statistical Area. Its 2 county equivalents have 249,876 residents on 955.8 square miles of land; Calumet County accounts for 33.3% of the land and 21.6% of the residents. By combined land it ranks #284 of 393 metropolitan areas, and #200 by population. It belongs to the Appleton-Oshkosh-Neenah, WI Combined Statistical Area.
| County equivalent | Population 2025 | Land mi² |
|---|---|---|
| Outagamie County | 195,894 | 637.6 |
| Calumet County | 53,982 | 318.3 |
ZIP codes
14 ZIP Code Tabulation Areas have land in Calumet County; 9 of them have most of their land inside the county, and the others mainly cover neighboring areas.
5301453020530425304953061530885411054123541295413054160541695491554952
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 Calumet County
Calumet County shares a land border with 6 county equivalents. Each of them has more land than Calumet County. The largest neighbor is Fond du Lac County (719.6 mi²) and the smallest is Winnebago County (434.7 mi²). Together with its neighbors, Calumet County forms a block of 3,741 mi² of land, of which it holds 8.5%.
| Bordering county equivalent | Land mi² | Size vs. Calumet | Compare |
|---|---|---|---|
| Fond du Lac County | 719.6 | 2.3× larger | Compare |
| Outagamie County | 637.6 | 2× larger | Compare |
| Manitowoc County | 589.3 | 1.9× larger | Compare |
| Brown County | 530.1 | 1.7× larger | Compare |
| Sheboygan County | 511.5 | 1.6× larger | Compare |
| Winnebago County | 434.7 | 1.4× larger | Compare |
How big is Calumet County compared with U.S. states?
Calumet County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 3.2 times as much. Wisconsin’s county land could hold about 170 areas the size of Calumet County.
Another way to picture it: the same land area would fill a square about 17.8 miles (28.7 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 Calumet County?
Calumet County has more land than 453 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 Calumet County at #2,615 nationally by total area, 154 places closer to the top than its land rank. The water assigned to this geography moves it ahead of some county equivalents with more land.
Its water share is 19.9%, compared with a national county-equivalent median of 1.2% — 18.7 percentage points higher. 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 Calumet County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #2768 | Henry County, Georgia | 318.7 | Compare |
| #2769 | Calumet County, Wisconsin | 318.3 | This county |
| #2770 | Rockcastle County, Kentucky | 316.6 | 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 44.078410, -88.212132. 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: 824,263,569 m²; AWATER: 204,161,557 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 Calumet County?
Calumet County, Wisconsin has 318.3 square miles (824.3 km²) of land and 78.8 square miles of water, for a total area of 397.1 square miles. It ranks #2769 of 3,222 U.S. county equivalents by land area.
Is Calumet County the largest county in Wisconsin?
No. Calumet County ranks #68 of 72 in Wisconsin by land area. The largest is Marathon County, with 1,545.2 square miles of land.
What counties border Calumet County?
Calumet County shares a land border with Manitowoc County, Winnebago County, Fond du Lac County, Outagamie County, Brown County, and Sheboygan County.
What is the population of Calumet County?
The Census Bureau estimates Calumet County had 53,982 residents on July 1, 2025, ranking #977 of 3,222 county equivalents. That is 170 people per square mile of land.
What is the county seat of Calumet County?
The county seat of Calumet County is Chilton.
What cities and towns are in Calumet County?
Calumet County has 21 county subdivisions (cities, towns and townships). The most populous five are Harrison village, Appleton city, Chilton city, Brillion city, and Sherwood village.
Is Calumet County part of a metropolitan area?
Yes. It is a central county of the Appleton, WI Metropolitan Statistical Area, which has 2 county equivalents and 249,876 residents.
How many ZIP codes are in Calumet County?
14 ZIP Code Tabulation Areas have land in Calumet 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 Calumet County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 3.2 times as much land.
How many acres of land are in Calumet County?
The land measurement converts to approximately 203,680 acres. Including water, total area is approximately 254,129 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.