 Federal Way has a large Korean American population at more than 5.5%, or 4,978 in the 2013 estimates.In the city the population was spread out with 28.2% under the age of 18, 9.9% from 18 to 24, 33.1% from 25 to 44, 21.1% from 45 to 64, and 7.6% who were 65 years of age or older.The median age was 32 years.