A general summary of the cost of living index in Stony Brook, NY is shown above. Compared to the state average of New York the cost of living index in Stony Brook, NY is 157, which is 34% higher than the average in New York and compared to the national average it is 57% higher than. The cost of living index is made up of several categories. These are transportation at 9%, utilities at 10%, goods and services at 33%, housing at 30%, groceries at 13%, and health care at 5%. The bulk of the cost of living index comes from the categories of goods and services and housing. If you look at everyday goods and services they can be a good indicator in a certain city of the general costs of goods there. In Stony Brook, NY goods and services come in at 14% higher than the average in New York and are 23% higher than compared to the nationwide average.