Demographics & People — Mountlake Terrace, Washington

Population Overview

Population (Census)21,419
Estimated 2026~27,600
Median Age38.3
Total Households9,117
Family Households5,335
Average Household Size2.33
Diversity Index0.5051 (moderately diverse)

Race & Ethnicity

White13,470
Black or African American774
Asian2,202
Hispanic or Latino3,678

Heritage & Ancestry

GroupCount
Other groups7,351
Unclassified or not reported3,716
German3,613
Hispanic: Hispanic or Latino2,708
English2,617
Irish2,457
Hispanic: Mexican1,958
Norwegian1,194
European934
American732

Language

English Only15,488
Spanish2,426
Population 5+20,434

Veterans

Veterans1,220
Population 18+17,371

Commuting

Mean Commute Time27.9 minutes
Work from Home21.9%
Commuter ProfileN/A
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Mountlake Terrace, Washington.