Chaska is a city in Carver County, Minnesota, United States. The population was 23,770 at the 2010 census. It is the county seat of Carver County, which is part of the Minneapolis-St. Paul-Bloomington, MN-WI Metropolitan Statistical Area.
Chaska's history reflects the influence of the Native American culture. The first inhabitants are believed to be the Mound Builders, whose ancient communities are marked by mounds in City Square. Later, the Dakota (commonly known as the Sioux) were the primary nation in this region known as the Big Woods. Although the Indian mounds located in Chaska City Square indicate the immediate area was inhabited years before 1769, that's the year Chaska's recorded history began.
In 1776, Jonathan Carver explored the lands along the Minnesota River and chronicled his journeys. French Canadian fur traders traveled the waterways, trading with the Dakota in the early 19th century. During this time, Jean-Baptiste Faribault established a trading post in Chaska.
In 1851, the Treaty of Traverse des Sioux officially opened Little Rapids, as Chaska was then known, to settlement. Soon after, speculators moved into the new territory. Among the earliest was Thomas Andrew Holmes who, in August 1851, claimed a 20-acre (81,000 m2) clearing as the Chaska townsite.
The name "Chaska" is derived from a Dakota word often given as a name to the first born male child. Records show that David L. Fuller purchased the "Shaska" townsite from Holmes in 1852. In 1857, the townsite was platted by the Shaska Company. In the same year, construction began on the original Carver County Courthouse located where the post office and KleinBank now stand in downtown Chaska. Chaska was incorporated as a village in 1871 and, by special legislative charter, as a city in 1891.
An abundance of high quality clay led to the start of brick making in 1857. By the 1880s, as a result of the clay resources, Chaska was a thriving brick manufacturing center. Bricks were shipped by boat to Saint Paul and, although the city grew as a result of steamboat trade, it was not until the Minneapolis and St. Louis Railway was built through town in 1873 that rapid expansion began.
With the advent of the 20th century came other industries, including the processing of beet sugar and other agricultural products; flour making, butter making, the canning of peas, corn, and tomatoes, and the curing of sauerkraut and pickles.
National polls named Chaska the eighth-best city in the United States in 2007 and 20th best in 2009.
In September, 2016, Chaska hosted the Ryder Cup at Hazeltine National Golf Course.