Population Demographics
As of 2026 the population of Tukwila is 22,792. The population is expected to grow to 23,649 by 2031 - a growth rate of 0.74%.
The median age of Tukwila residents is 38.
The diversity index of Tukwila is 85.3, meaning that there is a 85% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.