what county is thiensville, wisconsin in?
Sponsored Topics. Thiensville is a village in Ozaukee County, Wisconsin, United States. The population was 3,254 at the 2000 census. It was founded by its namesake, John Henry Thien. In July 2005, CNN/Money and Money magazine ranked Thiensville and neighboring Mequon 19th on its list of the 100 Best Places to Live in the United States.