Cost of living in Washington D.C. (United States) is 227% 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 1,933 prices entered by 371 different people.
For example, you would need at least 17,022 zł ($5,015) in Washington D.C. to maintain the same standard of living that you can have with 5,200 zł in Zielona Góra.