Calumet County, Wisconsin
Location within the U.S. state of Wisconsin
Wisconsin's location within the U.S.
|• Total||397 sq mi (1,030 km2)|
|• Land||318 sq mi (820 km2)|
|• Water||79 sq mi (200 km2) 20%|
| • Estimate |
|• Density||120/sq mi (48/km2)|
|Time zone||UTC−6 ( Central)|
|• Summer ( DST)||UTC−5 ( CDT)|
Calumet County is a county located in the U.S. state of Wisconsin. As of the 2010 census, the population was 48,971.  The county seat is Chilton.  The county was created in 1836 (then in the Wisconsin Territory) and organized in 1850. 
The Holyland is partially located in southern Calumet County.
In the 1830s, the United States government relocated Native Americans from New York and New England to the southwest part of the county; these included the Brothertown Indians, Oneida Indians, and Stockbridge-Munsee Indians. This was a second migration for the Brothertown and Stockbridge Indians, who had moved to New York after the American Revolutionary War. The Oneida shared land on their reservation with these peoples, who had been displaced by the years of colonization in New England, warfare and disease. Each of the three groups are federally recognized with reservations in Wisconsin.
The county was legally organized on February 5, 1850, by Chapter 84 Laws of 1850. 
Calumet County figures prominently in the 2015 Netflix television series Making a Murderer, which documents the arrests and trials of Manitowoc County resident Steven Avery, which involves from 2005 the Calumet sheriff's department and district attorney's office of Ken Kratz. 
According to the U.S. Census Bureau, the county has a total area of 397 square miles (1,030 km2), of which 318 square miles (820 km2) is land and 79 square miles (200 km2) (20%) is water.  It is the fifth-smallest county in Wisconsin by land area and fourth-smallest by total area. The west boundary is largely in Lake Winnebago. The Niagara Escarpment runs north-south several miles east of the western boundary. The topography has been greatly influenced by glaciation.
- Brown County – northeast
- Manitowoc County – east
- Sheboygan County – southeast
- Fond du Lac County – southwest
- Winnebago County – west
- Outagamie County – northwest
|U.S. Decennial Census
1790–1960  1900–1990 
1990–2000  2010–2019 
As of the census  of 2000, there were 40,631 people, 14,910 households, and 11,167 families residing in the county. The population density was 127 per square mile (49/km2). There were 15,758 housing units at an average density of 49 per square mile (19/km2). The racial makeup of the county was 96.68% White, 0.31% Black or African American, 0.34% Native American, 1.55% Asian, 0.01% Pacific Islander, 0.38% from other races, and 0.74% from two or more races. 1.07% of the population were Hispanic or Latino of any race. 63.4% were of German ancestry. 96.0% spoke English, 1.7% Spanish and 1.2% German as their first language.
There were 14,910 households, out of which 38.50% had children under the age of 18 living with them, 65.00% were married couples living together, 6.50% had a female householder with no husband present, and 25.10% were non-families. 20.40% of all households were made up of individuals, and 7.50% had someone living alone who was 65 years of age or older. The average household size was 2.70 and the average family size was 3.15.
In the county, the population was spread out, with 28.60% under the age of 18, 7.20% from 18 to 24, 32.00% from 25 to 44, 21.40% from 45 to 64, and 10.80% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 100.00 males. For every 100 females age 18 and over, there were 99.00 males.
In 2017, there were 478 births, giving a general fertility rate of 52.0 births per 1000 women aged 15–44, the ninth lowest rate out of all 72 Wisconsin counties.  Additionally, there were 14 reported induced abortions performed on women of Calumet County residence in 2017. 
The University of Wisconsin–Extension has compiled statistics on Calumet County's dairy industry. Calumet County has more bovines (cattle and calves) than people. As of 2010 there are 28,600 head of dairy cows and 65,000 head of bovine total (that includes dairy cows, beef cattle, and calves.)  73% of land in the county is owned by farmers. 2400 residents are employed in farming. Agriculture results in $338 million in economic activity, and it contributes $68.2 million in income to the county total income (including $7.2 million towards taxes). As of 2007, 99.3% of farms are owned by individuals, families, family partnerships or family corporations. Only 0.7% are owned by non-family corporate entities.  As of April 1, 2010, Calumet county had 174 farms with dairy herd licenses. 
In 1931, the Wisconsin Department of Agriculture described Calumet County as "one of the most important producers of American cheese among the counties of Wisconsin." 
No interstate highways run through Calumet County. There are several U.S. routes in the county. U.S. Route 10 runs east-west across the north edge of the county. U.S. Route 151 runs north-south near the west edge of the county, and turns east-west at the middle of the county. North-south state highways include 55 along the west edge, and 32/ 57 through the center. East-west state highways include 114 at the northwest corner of the county, and the now defunct 149 along the southeast corner. The Tri-County Expressway (WI 441) runs in an east-west to north-south curve in the extreme northwest corner of the county within Appleton city limits.
Nearly the entire west boundary of the county is located in Lake Winnebago. The first non-natives to enter the county most likely came in the county from the lake through the Fox River. The Manitowoc River and Sheboygan River both run through the county and flow into Lake Michigan through neighboring counties.
The west boundary of the county is located almost entirely in Lake Winnebago. Boaters use the lake for recreational boating and fishing in the summer. The lake is the site of ice fishing in the winter, and the Wisconsin Department of Natural Resources manages a sturgeon spearing season in February.
- Appleton (mostly in Outagamie County and Winnebago County)
- Chilton (county seat)
- Kaukauna, Wisconsin (mostly in Outagamie County, Wisconsin)
- Kiel (mostly in Manitowoc County)
- Menasha (mostly in Winnebago County)
- New Holstein
- Ken Kratz (born 1960-61), lawyer, former district attorney of Calumet County; law license was suspended for four months after sexting scandal.
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- "Wisconsin: Individual County Chronologies". Wisconsin Atlas of Historical County Boundaries. The Newberry Library. 2007. Retrieved August 13, 2015.
- Stories compiled and presented by the New Holstein Historical Society. Pioneer's Corner. pp. 69–70.
- Wulff, Eugene C. The New Holstein Story.
- "Making a Murderer (TV Series)". IMDb. Retrieved December 28, 2015.
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- "NASA Earth Observations Data Set Index". NASA. Retrieved January 30, 2016.
- "Population and Housing Unit Estimates". Retrieved March 26, 2020.
- "U.S. Decennial Census". United States Census Bureau. Retrieved August 2, 2015.
- "Historical Census Browser". University of Virginia Library. Retrieved August 2, 2015.
- Forstall, Richard L., ed. (March 27, 1995). "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved August 2, 2015.
- "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. April 2, 2001. Retrieved August 2, 2015.
- "U.S. Census website". United States Census Bureau. Retrieved May 14, 2011.
- "Annual Wisconsin Birth and Infant Mortality Report, 2017 P-01161-19 (June 2019): Detailed Tables". Archived from the original on 2019-06-19. Retrieved 2019-06-19.
- Reported Induced Abortions in Wisconsin, Office of Health Informatics, Division of Public Health, Wisconsin Department of Health Services. Section: Trend Information, 2013-2017, Table 18, pages 17-18
- http://www.nass.usda.gov/Statistics_by_State/Wisconsin/index.asp#.html Archived 2010-06-12 at the Wayback Machine
- "Calumet County Agriculture: Value and economic impact" (PDF). University of Wisconsin–Extension. Retrieved May 17, 2010.[ permanent dead link]
- Wisconsin Farm Reporter, Wisconsin Field Office of the National Agricultural Statistics Service; May 25, 2010; Volume 10, Number 11
- November 23, 2006 article "Looking Back" Chilton Times-Journal, Page 7.
- Mike Mathes "Homestead, Avery case top '06 news"; January 4, 2007; Page 2; Tri-County News
- Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved May 7, 2018.
- Calumet County Government
- Calumet County map from the Wisconsin Department of Transportation
- Calumet County Fair