Across large U.S. cities, millennials earn an average of 8.8% more than the overall median household income, a new SmartAsset study found. But in some places, that gap is much wider, especially in cities like Jersey City, New Jersey, and Berkeley, California. Jersey City ranks first among major U.S. cities for millennial earnings, with residents ages 25 to 44 earning about 42.4% more than the local median household income. The median millennial household income there is around $143,500, compared to $100,7 ...