Wisconsin, a state in the U.S. Upper Midwest bordering the Great Lakes, has a population of approximately 6 million and ranks as the 20th-largest state by population and 23rd by area. It is bordered by Minnesota, Iowa, Illinois, Lake Michigan, Michigan, and Lake Superior. The state capital is Madison, while Milwaukee is the most populous city. Other notable urban areas include Green Bay, Kenosha, Racine, and Eau Claire. Wisconsin consists of 72 counties.
Between 1850 and 1900, the immigrants were mostly Germans, Scandinavians (the largest group being Norwegian), Irish, and Poles.
In 1901, Progressive Republicans in Wisconsin initiated the nation's first comprehensive statewide primary election system.
In 1903, the Milwaukee Mile, an oval track, opened as the oldest operating motorsports venue in the world.
By 1910, Wisconsin ranked 8th among U.S. states in total product value, driven by manufacturing and immigration.
In 1910, Emil Seidel was elected mayor of Milwaukee, becoming the first socialist mayor of a large city in the United States.
By 1914, Progressive Republicans in Wisconsin had created the nation's first effective workplace injury compensation law, and the first state income tax.
In 1921, the Green Bay Packers joined the National Football League (NFL) during the league's second season.
In 1926, the designation of United States Numbered Highways began in the state of Wisconsin.
Since 1927, races have been held every year at the nation's oldest operating velodrome in Kenosha.
In 1932, UW economics professors helped Wisconsin create the first unemployment compensation program in the United States.
In 1934, the border dispute with Michigan was settled in the case Wisconsin v. Michigan.
In 1935, Wisconsin Idea scholars at the University generated the plan that became the New Deal's Social Security Act, with Wisconsin expert Arthur J. Altmeyer playing a key role.
In 1935, the border dispute with Michigan was settled in the case Wisconsin v. Michigan.
On July 13, 1936, the highest temperature ever recorded in Wisconsin was reached in the Wisconsin Dells, at 114 °F (46 °C).
African Americans came to Milwaukee, especially from 1940 on.
In 1940, "America's Dairyland" was made the official state slogan.
Since 1945, Wisconsin has maintained a close balance between Republicans and Democrats in its politics.
In 1949, the success of the Chinese Communist Revolution caused public opinion to move towards support for the protection of democracy and capitalism against Communist expansion.
In 1956, construction began on Wisconsin's Interstate Highway system.
In 1957, the badger was named Wisconsin's state animal.
In August 1970, radical antiwar protests at UW-Madison culminated in the Sterling Hall bombing.
As of 2015, the number of manufacturing jobs in the state was approximately 500,000, similar to the figure in 1970.
Prior to the Democratic win of all constitutional statewide offices in 2018, the last time this happened in Wisconsin was in 1982.
Prior to Donald Trump's win in 2016, the last time Wisconsin voted for a Republican presidential nominee was in 1984.
In 1992, Wisconsin was part of the blue wall, a group of states the Democratic Party won in each presidential election.
In 1996, Wisconsin's lowest temperature was recorded on February 2 and 4 in Couderay, reaching -55 °F (-48 °C).
Between 2000 and 2016 manufacturing declined as a share of the state's gross state product from about 21.5% to 18.5%.
Since 2001, the Milwaukee Brewers have played at American Family Field in Milwaukee.
In 2003, DUI (driving under the influence) offenses in Wisconsin were lowered to a blood alcohol content (BAC) of 0.08 as a result of federal government pressure.
In 2004, Whistling Straits golf club in Sheboygan hosted a PGA Championship.
Until January 1, 2008, Wisconsin's estate tax was decoupled from the federal estate tax laws, leading the state to impose its own estate tax on certain large estates.
In 2008, the Wisconsin Department of Natural Resources projected the pre-hunt deer population to be between 1.5 and 1.7 million.
The state's economic output from manufacturing was $48.9 billion in 2008, making it the tenth largest among states in manufacturing gross domestic product.
Since 2009, Wisconsin's minimum wage has been $7.25, the same as the federal rate.
Statewide FBI Crime statistics for 2009 include 144 murders/non-negligent manslaughter; 1,108 rapes; 4,850 robberies; 8,431 aggravated assaults; and 147,486 property crimes.
In 2010, Whistling Straits golf club in Sheboygan hosted a PGA Championship.
In 2010, the United States Census occurred.
As of 2011, there were 12 cities in Wisconsin with a population of 50,000 or more, accounting for 73% of the state's employment.
In 2011, Wisconsin Act 10 was passed, making significant changes to collective bargaining and benefits for public sector employees, leading to protests.
Some have argued the state has experienced democratic backsliding since 2011.
In 2012, Republican presidential nominee Mitt Romney chose Congressman Paul Ryan, a Janesville native, as his running mate against incumbent President Barack Obama.
In 2012, Wisconsin was part of the blue wall, a group of states the Democratic Party won in each presidential election.
In 2013, kringle, a sweet flaky pastry brought by Danish immigrants, became the official state pastry of Wisconsin.
Following the 2014 general elections, the governor, lieutenant governor, attorney general, and treasurer of Wisconsin were all Republicans.
As of March 30, 2015, the Wisconsin Intercollegiate Athletic Conference claimed 107 NCAA national championships in 15 different sports.
As of 2015, the number of manufacturing jobs in the state was approximately 500,000, similar to the figure in 1970.
By the end of 2015, Wisconsin met its mandate to source ten percent of its electrical energy from renewable sources.
In 2015, Whistling Straits golf club in Sheboygan hosted a PGA Championship.
In 2015, the most recent expansion of Wisconsin's Interstate Highway system took place with the addition of I-41.
On July 1, 2016, a Mexican consulate opened in Milwaukee.
Between 2000 and 2016 manufacturing declined as a share of the state's gross state product from about 21.5% to 18.5%.
In 2016, Donald Trump won Wisconsin by a narrow margin of 0.77%, the first time the state voted for a Republican presidential nominee since 1984.
In 2017, Erin Hills, a golf course in Erin, Wisconsin, hosted the U.S. Open.
In 2018, Democrats won all constitutional statewide offices on the ballot in Wisconsin, the first time this happened since 1982.
In 2018, The Hop, a modern streetcar system in Milwaukee, began service.
On January 7, 2019, Tony Evers assumed office as the Governor of Wisconsin.
On July 1, 2019, the United States Census Bureau estimated that the population of Wisconsin was 5,822,434.
Following the 2020 census reapportionment, Wisconsin has eight seats in the U.S. House of Representatives.
In 2020, Wisconsin's gross domestic product was $348 billion.
In 2020, the Ryder Cup golf competition between the USA and Europe was held at Whistling Straits in Sheboygan.
In a 2020 study, Wisconsin was ranked as the 25th easiest state for citizens to vote in.
Per the Association of Religion Data Archives' 2020 study, Catholicism was the single-largest denomination with 1,237,342 adherents.
According to the Department of Tourism, tourism in Wisconsin generated $20.9 billion in total economic impact in 2021 and is the state's third-largest sector.
In 2021, the Wisconsin Shipwreck Coast National Marine Sanctuary was established in Lake Michigan off the coast of Wisconsin to protect historically significant shipwrecks.
According to HUD's 2022 Annual Homeless Assessment Report, there were an estimated 4,775 homeless people in Wisconsin.
According to Public Religion Research Institute's 2022 American Values Survey, those identifying with a religion or spiritual tradition were approximately 75% of the state's population.
In 2022 the per capita personal income was $61,475 and was $66,596 when adjusted by regional price parity.
In 2022, the five largest European ancestry groups were German (36%), Irish (10.2%), Polish (7.9%), English (6.7%), and Norwegian (6.3%).
In 2023, Wisconsin's gross state product was $413.966 billion, making it 21st among U.S. states.
In the 2023 ruling of Clarke v. Wisconsin Elections Commission, the Wisconsin Supreme Court overturned the legislative gerrymander.
Starting in 2023, five University of Wisconsin branch campuses have closed, raising concerns about the future of the Wisconsin Idea.
As of 2024, Road America near Elkhart Lake hosts races in several series including the IndyCar Series, IMSA SportsCar Championship, and MotoAmerica Superbike Championship.
In 2024, eight corporations based in Wisconsin are listed on the Fortune 500.
In 2024, the state's seasonally adjusted unemployment rate has hovered at 3.0%, lower than the U.S. average.
In the 2024 presidential election, Republican Donald Trump won Wisconsin by 0.58%, the closest margin of any state in that election.