An overview of the general cost of living index for Key West, FL is displayed above for your reference. Residents in Key West, FL enjoy a cost of living index of 139. This index is 41% higher than the Florida average, and 39% 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 Key West, FL, the average cost of goods and services is 5% higher than it is in Florida, and it is 5% higher than the national average.