A general summary of the cost of living index in Prospect Park, NJ is shown above. Compared to the state average of New Jersey the cost of living index in Prospect Park, NJ is 121, which is 4% lower than the average in New Jersey and compared to the national average it is 21% 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 Prospect Park, NJ goods and services come in at equal to the average in New Jersey and are 14% higher than compared to the nationwide average.