An overview of the general cost of living index for Marana, AZ is displayed above for your reference. Residents in Marana, AZ enjoy a cost of living index of 106. This index is 8% higher than the Arizona average, and 6% 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 Marana, AZ, the average cost of goods and services is 4% higher than it is in Arizona, and it is 1% higher than the national average.