Mountlake Terrace, Washington Population 2021

21,278
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Mountlake Terrace is a city located in Snohomish County Washington. With a 2020 population of 21,278, it is the 55th largest city in Washington and the 1765th largest city in the United States . Mountlake Terrace is currently declining at a rate of -0.14% annually but its population has increased by 6.88% since the most recent census, which recorded a population of 19,909 in 2010. Mountlake Terrace reached it's highest population of 21,368 in 2018. Spanning over 4 miles, Mountlake Terrace has a population density of 5,246 people per square mile.

The average household income in Mountlake Terrace is $87,769 with a poverty rate of 7.33%. The median rental costs in recent years comes to $1,464 per month, and the median house value is $392,600. The median age in Mountlake Terrace is 37.3 years, 36.6 years for males, and 38.3 years for females.

Mountlake Terrace Demographics

According to the most recent ACS, the racial composition of Mountlake Terrace was:

  • White: 66.77%
  • Asian: 13.59%
  • Black or African American: 7.52%
  • Two or more races: 6.64%
  • Other race: 3.95%
  • Native Hawaiian or Pacific Islander: 1.03%
  • Native American: 0.51%
The current population of Mountlake Terrace, Washington is 21,278 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 21,368.The last official US Census in 2010 recorded the population at 19,909.

Mountlake Terrace, Washington Population 2021

Population by Race

Race Population Percentage
White14,16166.77%
Asian2,88313.59%
Black or African American1,5947.52%
Two or More Races1,4096.64%
Some Other Race8373.95%
Native Hawaiian and Other Pacific Islander2181.03%
American Indian and Alaska Native1080.51%
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Mountlake Terrace Population by Race

Mountlake Terrace Population Pyramid $2021

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Mountlake Terrace Median Age

37.3


Total

36.6


Male

38.3


Female

Mountlake Terrace Adults

There are 16,982 adults, (2,662 of whom are seniors) in Mountlake Terrace.

Mountlake Terrace Age Dependency

48.1

Age Dependency Ratio

18.6

Old Age Dependency Ratio

29.5

Child Dependency Ratio

Mountlake Terrace Sex Ratio

Female

10,766

50.76%

Male

10,444

49.24%

Mountlake Terrace Population by Age

Mountlake Terrace Renter vs Owner Occupied by Household Type

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Mountlake Terrace Household Types

Type Owner Renter
Married72%28%
All53.5%46.5%
Non Family44%56%
Female33.7%66.3%
Male31.6%68.4%

53.5%

Rate of Home Ownership

Mountlake Terrace Households and Families

Type Count Average Size Owned
All8,5572.4653.5
Married3,6243.1972
Non Family3,1551.3944
Female1,0912.7633.7
Male6873.0731.6

2.97

Average Family Size

2.46

Average Household Size

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Mountlake Terrace Households by Type

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Education Attained Count Percentage
Less Than 9th Grade3742.41%
9th to 12th Grade6093.93%
High School Graduate2,90918.77%
Some College4,12126.59%
Associates Degree1,88212.14%
Bachelors Degree3,84424.80%
Graduate Degree1,76211.37%
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Mountlake Terrace Educational Attainment by Sex (over 25)

Mountlake Terrace Educational Attainment by Race

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Race Total High School Bachelors
White10,2549,8843,856
Asian2,1361,8771,046
Hispanic1,2281,059280
Black1,076951208
2+ Races685661153
Other Race41631558
Islander167128
Native American1028970

The highest rate of high school graduation is among 2+ races people with a rate of 96.50%.

The highest rate of bachelors degrees is among native american people with a rate of 68.63%.

Mountlake Terrace Educational Attainment by Race

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Name Average Male Female
Overall$45,608$53,090$38,983
Less Than 9th Grade$26,523$53,646$19,143
High School Graduate$39,149$43,464$31,230
Some College$41,320$51,338$35,884
Bachelors Degree$53,156$59,321$45,330
Graduate Degree$74,275$86,912$69,432

$45,608

Average Earnings

$53,090

Average Male

$38,983

Average Female

Mountlake Terrace Earnings by Educational Attainment

Mountlake Terrace Language by Age

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Mountlake Terrace Language

72.11% of Mountlake Terrace residents speak only English, while 27.89% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 12.30% of the population.

Mountlake Terrace Language

Mountlake Terrace Poverty by Race

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Name Total In Poverty Poverty Rate
White13,0506244.78%
Hispanic2,23238617.29%
Asian2,8772237.75%
Black1,58622214.00%
Other83615518.54%
Multiple1,37614110.25%
Native1081513.89%

7.33%

Overall Poverty Rate

7.72%

Male Poverty Rate

6.96%

Female Poverty Rate

Poverty in Mountlake Terrace

The race most likely to be in poverty in Mountlake Terrace is Other, with 18.54% below the poverty level.

The race least likely to be in poverty in Mountlake Terrace is White, with 4.78% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.73%. Among those working part-time, it was 9.68%, and for those that did not work, the poverty rate was 15.19%.

Mountlake Terrace Poverty

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Name Poverty
Less Than 9th Grade17.50%
High School8.51%
Some College5.94%
Bachelors or Greater4.02%

Mountlake Terrace Poverty Rate by Education

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Rate Poverty
Female Unemployed45.30%
Male Unemployed18.31%
Male Employed2.87%
Female Employed2.55%

Mountlake Terrace Poverty Rate by Employment Status and Sex

Mountlake Terrace Income by Household Type

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Name Median Mean
Households$72,955$87,769
Families$82,154$97,938
Married Families$98,059-
Non Families$54,292$65,357
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Income by Household Type

Mountlake Terrace Marital Status

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Marriage Rates

44.6%

Overall Marriage Rate

45.4%

Male Marriage Rate

43.9%

Female Marriage Rate

Mountlake Terrace Married by Age and Sex

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Mountlake Terrace Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.

Mountlake Terrace Marital Status by Race

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Mountlake Terrace Marital Status

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1,147

Number of Veterans

1,063

Male Veterans

84

Female Veterans

War Veterans
Vietnam499
First Gulf War242
Second Gulf War138
Korea118
World War II22

Mountlake Terrace Veterans by War

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Age Group Veterans
65 to 74287
75+268
55 to 64255
35 to 54252
18 to 3485

Mountlake Terrace Veterans by Age

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Name Veterans % of Total
White9758.35%
Hispanic705.13%
2+ Races646.80%
Asian421.78%
Islander2112.57%
Black201.65%
Other Race183.71%
Native American76.48%

Mountlake Terrace Veterans by Race

Mountlake Terrace Veterans by Education

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3.78%

Veteran Poverty Rate

29.82%

Veteran Disability Rate

Mountlake Terrace Veterans by Education

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69.5%

Labor Force Participation

66.9%

Employment Rate

3.6%

Unemployment Rate

Mountlake Terrace Employment by Age

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Mountlake Terrace Employment by Race

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Mountlake Terrace Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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44.31%

Born in Mountlake Terrace

76.37%

Native Born

23.63%

Foreign Born

9.93%

Non Citizen

13.70%

Naturalized

Place of Birth

76.37% of Mountlake Terrace residents were born in the United States, with 44.31% having been born in Washington. 9.93% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Mountlake Terrace Place of Birth

Year Population Growth Annual Growth Rate
202121,278-30-0.14%
202021,308-30-0.14%
201921,338-30-0.14%
201821,368210.10%
201721,3472271.07%
201621,1202401.15%
201520,8801580.76%
201420,7221440.70%
201320,5784432.20%
201220,1351600.80%
201119,975680.34%
201019,907-455-0.23%
200020,3621,0420.53%
199019,3202,7861.57%
198016,534-66-0.04%
197016,6007,4786.17%
19609,1220.00%

Mountlake Terrace Population by Year