Mahaska County is named for Chief Mahaska, who was a chief of the Ioway Native American tribe.
Created: February 17, 1843
Oskaloosa 1844 – present
County Courthouse – Oskaloosa
Location: 106 South 1st Street / High Avenue East
Built: 1882 – 1886
Architect: H C Koch and Company of Milwaukee, Wisconsin
Contractor: O J King & Company
Description: The building faces west and is a three story red colored brick and stone structure. The building has a stone foundation. The west front has a large stone arch around the first story entrance. Above rises a square brick tower which is tired having a square clock tower with spires at the top. The roof line has peaked dormers with arched windows. Stone trim horizontal bands run along the building.
Note: The first courthouse was built in 1844 to 1845. The cost of construction of the present courthouse was $132,500.
E – Keokuk County
W – Marion County
Photos taken 2008