Cost of living in Spokane, Washington (United States) is 18% cheaper than in Aalborg (Denmark)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 343 prices entered by 32 different people.
For example, to keep the same standard of living that would require kr26,000 in Aalborg you would need to make just about kr21,226 ($3,222) in Spokane, Washington.