SeaTac is a city located in Washington. With a 2020 population of 29,561, it is the 40th largest city in Washington and the 1303rd largest city in the United States. SeaTac is currently growing at a rate of 0.55% annually and its population has increased by 9.86% since the most recent census, which recorded a population of 26,909 in 2010. Spanning over 10 miles, SeaTac has a population density of 2,937 people per square mile.
The average household income in SeaTac is $74,268 with a poverty rate of 12.42%. The median rental costs in recent years comes to $1,190 per month, and the median house value is $288,600. The median age in SeaTac is 34.9 years, 34.1 years for males, and 35.9 years for females. For every 100 females there are 114.1 males.