The above illustration supplies generalized information for the Derby, CT cost of living index. Compared to other cities in Connecticut and cities across the country, the cost of living index in Derby, CT is 112, which is 7% lower than the Connecticut average and 12% higher than that for the entire country. The index is comprised of the following criteria: cost of retail goods and services (33%), groceries (13%), health care (5%), housing (30%), cost of public/private transportation (9%) and utilities (10%). Everyday goods and services, along with housing account for 63 percent of the total cost of living index. Goods and services that are a necessity regardless of location provide an accurate general sense of the cost of living in one city versus another. As seen above, the cost of retail goods and services in Derby, CT are 1% higher than the average for Connecticut and 21% higher than the rest of the country.