Cost of living in Washington D.C. (United States) is 189% more expensive than in Zielona Góra (Poland)
WARNING! This comparison is based on only a few data points. At this point it is only a guess. It is based on 1,943 prices entered by 310 different people.
For example, you would need at least 17,332 zł ($4,592) in Washington D.C. to maintain the same standard of living that you can have with 6,000 zł in Zielona Góra.