A general overview of the cost of living index for Lake Mills, WI is displayed above. In Lake Mills, WI, the overall cost of living index is 99, which is 1% higher than the Wisconsin average and 1% lower than the U.S. average. The following categories are used to calculate the overall cost of living index: goods/services (33%), housing (30%), groceries (13%), utilities (10%), transportation (9%) and health care (5%). From the list, it is clear that the categories of goods/services and housing are responsible for the largest portions of the overall cost of living index. As a general rule, everyday goods and services provide an accurate measure of the general cost of goods in any given city. In the case of Lake Mills, WI, the city's goods and services are 2% higher than the Wisconsin average and 2% higher than the U.S. average.