An overview of the general cost of living index for Plymouth, NC is displayed above for your reference. Residents in Plymouth, NC enjoy a cost of living index of 88. This index is 7% lower than the North Carolina average, and 12% lower 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 Plymouth, NC, the average cost of goods and services is 13% higher than it is in North Carolina, and it is 10% higher than the national average.