Mountlake Terrace

County:: Snohomish County
County Seat:: No
Area (mi²):: 4.056
State:: Washington

Mountlake Terrace is a city located in Snohomish County, Washington. Mountlake Terrace has a 2025 population of 21,671. Mountlake Terrace is currently growing at a rate of 0.36% annually and its population has increased by 1.82% since the most recent census, which recorded a population of 21,283 in 2020.

The average household income in Mountlake Terrace is $126,013 with a poverty rate of 8%. The median age in Mountlake Terrace is 38.2 years: 37.6 years for males, and 38.7 years for females.

Demographics

The racial composition of Mountlake Terrace includes 62.89% White, 10.73% other race, 10.28% Asian, 3.61% Black or African American, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	13,470	62.89%
Two or more races	2,363	11.03%
Other race	2,299	10.73%
Asian	2,202	10.28%
Black or African American	774	3.61%
Native American	224	1.05%
Native Hawaiian or Pacific Islander	87	0.41%

Mountlake Terrace Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Mountlake Terrace's average per capita income is $63,654. Household income levels show a median of $101,404. The poverty rate stands at 8%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$129,293	-
Families	$119,300	$153,364
Households	$101,404	$126,013
Non Families	$70,833	$83,164

$63,654

Average Income

$101,404

Median Household Income

8%

Poverty Rate