An overview of the general cost of living index for Bainbridge Island, WA is displayed above for your reference. Residents in Bainbridge Island, WA enjoy a cost of living index of 168. This index is 46% higher than the Washington average, and 68% 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 Bainbridge Island, WA, the average cost of goods and services is 27% higher than it is in Washington, and it is 35% higher than the national average.