Rock County

US States / V-Z / Wisconsin / Rock County

Rock County is named for the Rock River which flows through the county.


Created:  December 7, 1836

County Seat: 

Janesville  1836 – present


County Courthouse – Janesville


Location:  51 South Main Street / Court Street

Built:  1954 – 1955

Style:  Modern

Architect:  Carl Lloyd Ames of Milwaukee

Contractor:  J P Cullen of Janesville


Description:  The building faces south and is a five story buff colored brick, glass and concrete structure. The building rises north up a slope. The south center section is rounded with supporting pillars on the first story at the entrance. The building has square lines with large corner windows. On the west side is a square tower. An addition was built in 1997 on the site of the old Court House. The architect was Kenton Peters of Madison and the contractor was Miron Construction of Neenah.



N – Dane County and Jefferson County 

E – Walworth County

S – Boone County, Illinois and Winnebago County, Illinois

W – Green County











Photos taken 2005 and 2008