Cost of living in Boulder, Colorado (United States) is 96% more expensive than in Zonguldak (Turkey)
WARNING! This comparison is based on only a few data points. At this point it is only a guess. It is based on 283 prices entered by 34 different people.
For example, you would need at least 4,897TL ($921) in Boulder, Colorado to maintain the same standard of living that you can have with 2,500TL in Zonguldak.