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

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