NOTE: Gray indicates insufficient data or a suppressed estimate.
Younger median ages cluster along the central Seattle corridor and near university areas, with several zip codes in the University District and downtown falling below 30, while the southern suburbs around Tacoma and Lakewood also skew younger. The oldest populations concentrate in the northern and eastern periphery of the metro, particularly in rural and exurban zip codes north of Kirkland and east of Bellevue, where median ages exceed 50. A notable east-side outlier near the Sammamish Plateau registers among the highest median ages in the metro, contrasting sharply with the younger adjacent communities in Bellevue and Redmond.
Data: U.S. Census Bureau, 2023 ACS
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