1769History
Although the Indian mounds located in Chaska City Square indicate the immediate area was inhabited years before 1769, the year Chaska's recorded history began.
1776History
In 1776, Jonathan Carver explored the lands along the Minnesota River and chronicled his journeys.
1851Architecture
In 1851, the Treaty of Traverse des Sioux officially opened Little Rapids, as Chaska was then known, to settlement.
1852History
Fuller purchased the "Shaska" townsite from Holmes in 1852.
1857Economy
In 1857, the townsite was platted by the Shaska Company.
1871Government
Chaska was incorporated as a village in 1871 and, by special legislative charter, as a city in 1891.
1873Architecture
Louis Railway was built through town in 1873 that rapid expansion began.
1966History
With that expansion came the introduction of the Jonathan New Town design concept in 1966.
2000History
As of 2000, the median income for a household in the city was $60,325, and the median income for a family was $69,612.
2005Government
In early 2005, the city of Chaska annexed the remaining portion of Chaska Township.
2006History
The City of Chaska merged with Chaska Township in 2006.
2007History
National polls named Chaska the eighth-best city in the United States in 2007 and 20th best in 2009.
2010History
=== 2010 census ===
As of the census of 2010, there were 23,770 people, 8,816 households, and 6,188 families residing in the city.
2015History
Opening in December 2015, the Chaska Curling Center has exceeded expectations as becoming a landmark in the city.
2016Civil Rights
In September 2016, Chaska hosted the Ryder Cup at Hazeltine National Golf Course, and in March 2018, the PGA of America, with help from the U.S.
2018Architecture
The building has since become a fitness center and was razed in 2018 to make way for a small strip mall.
2019Military
In 2019, the mayor was Mark Windschitl, and the council members were: Jon Grau (Ward I), Taylor Hubbard (Ward II), McKayla Hatfield (Ward III), and Mike Huang (Ward IV).
2020History
=== 2020 census ===
As of the census of 2020, there were 27,810 people, 10,336 households.
2025History
As of June 2025 the senator is Julie Coleman (Republican) and the two representatives are Jim Nash (Republican) for district 48A and Lucy Rehm (DFL) for 48B.
2028Sports
Curling team, announced Hazeltine would be the first American venue to host a second Ryder Cup in 2028.