Biohazard and Crime Scene Remediation in Cassville, WI

Cassville is a village in Grant County, Wisconsin, set on the east bank of the Mississippi River opposite the mouth of Iowa's Turkey River.

Cassville was named for Lewis Cass, governor of the Michigan Territory, and its post office dates to 1828.

Cassville's site was a Meskwaki (Fox) village of twelve substantial log lodges and cultivated fields when Henry Schoolcraft observed it in 1820.

Euro-American settlement began in 1827, when Judge John Sawyer built a smelting furnace there to serve lead miners pushing north from Galena, Illinois, and 60 to 70 people arrived in the first year.

In 1836 speculators bet wrongly that Cassville would become the capital of the new Wisconsin Territory; the Albany, New York firm of Daniels, Denniston & Co. bought most of the townsite and built the brick Denniston House hotel for a reported $45,000, but the Panic of 1837 and the lost capital bid stalled the village for a decade.

Nelson Dewey arrived in Cassville in 1836 as a clerk for Daniels, Denniston & Co. and went on to become Wisconsin's first governor, serving from 1848 to 1852.

After his governorship Dewey bought up the village, rebuilt the Denniston House as a hotel, and in the 1860s built Stonefield, a 2,000-acre estate just west of Cassville with a three-story Gothic Revival mansion completed in 1868 and eleven miles of stone fences.

Dewey's mansion burned in 1873 and he died poor in the Denniston House in 1889, but his estate survives as the 756-acre Nelson Dewey State Park and the Stonefield Historic Site, a Wisconsin Historical Society museum with a recreated circa-1900 farming village and the State Agricultural Museum.

Cassville was incorporated as a village on March 28, 1882.

Cassville had 777 residents at the 2020 census, down from a peak of 1,343 in 1970; its 947 residents lived in 428 households at the 2010 census.