Population.us

Population of SeaTac, WA

Last official estimated population of SeaTac city (King County**, Washington state) was 28,126 (year 2014)^[1]. This was 0.009% of total US population and 0.39% of total Washington state population. Area of SeaTac city is 10.2 mi² (=26.4 km²)^[6], in this year population density was 2,755.83 p/mi². If population growth rate would be same as in period 2010-2014 (+1.11%/yr), SeaTac city population in 2023 would be 31,069*.

Historical population

Historical population of SeaTac city for period 1980-2014:

SeaTac city on population map

Estimated population for 2014^[1]. Click on flag to hide it.

Population • Legends • Position

Settlements near SeaTac city

• Kent city population 5.5 mi, 133°
• Renton city 5.5 mi, 65°
• Federal Way city 9.5 mi, 190°
• Auburn city 10.5 mi, 156°
• Burien city 3 mi, 318°
• Des Moines city 3.7 mi, 192°
• Mercer Island city 8.9 mi, 22°
• Tukwila city 2.5 mi, 24°
• Newcastle city 8.7 mi, 45°
• Normandy Park city 2.3 mi, 251°

Sources, notices

*Calculated by population.us from last known population growth rate, not official data.

**Some cities are placed on more than one county. Only 1 county is shown.

[1] Cities and Towns (Incorporated Places and Minor Civil Divisions) 2014, archived from the original, retrieved 02/23/2016

[2] City and Town Intercensal Estimates (2000-2010), archived from the original, retrieved 02/23/2016

[3] Places: 1990 and 1999 Populations, With Numeric and Percent Population Change, archived from the original, retrieved 02/23/2016

[4] Population of the 100 Largest Urban Places: 1980,

[5] Population of the 100 Largest Urban Places in history,

[6] Area, latitude longitude data, retrieved 02/23/2016

[7] Through the Decades, Overview 1790-2010, PDF, large files! >100 Mb