An overview of the general cost of living index for King of Prussia, PA is displayed above for your reference. Residents in King of Prussia, PA enjoy a cost of living index of 125. This index is 26% higher than the Pennsylvania average, and 25% higher than the national average. The following categories are used when determining the cost of living index for any given city: health care (5%), transportation (9%), utilities (10%), groceries (13%), housing (30%), and goods/services (33%). Clearly, housing and goods/services make up the majority of the formula for calculating the cost of living index. Because of this, the general cost of living for any given area can be estimated by looking at the cost of everyday goods in that area. For those living in King of Prussia, PA, the average cost of goods and services is 10% higher than it is in Pennsylvania, and it is 8% higher than the national average.