Cost of living in Washington D.C. (United States) is 255% 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 2,120 prices entered by 351 different people.
For example, you would need at least 19,184 zł ($5,161) in Washington D.C. to maintain the same standard of living that you can have with 5,400 zł in Zielona Góra.