Mountlake Terrace ZIP Codes — Snohomish County, WA

There is one unique ZIP code in Mountlake Terrace, Washington and it is 98043. Area code: 425.

ZIP codes

4.05

sq mi land

0.10

sq mi water

425

area code

Mountlake Terrace, WA ZIP code map

About Mountlake Terrace, WA

Mountlake Terrace is a charming city located in Washington State, known for its beautiful parks and welcoming community. Situated in Snohomish County, it offers residents and visitors a blend of suburban tranquility and urban convenience. The city's close-knit atmosphere is complemented by its access to various amenities and recreational opportunities.

Location & geography

Mountlake Terrace covers a total land area of 4.05 square miles and features a small water area of 0.10 square miles. The city is conveniently located just north of Seattle, approximately 12 miles away, and borders other cities such as Edmonds to the west, Lynnwood to the east, and Shoreline to the south. The overall terrain is characterized by its lush greenery, with easy access to local parks like Terrace Creek Park.

Community & economy

The character of Mountlake Terrace is defined by its family-friendly environment and strong community spirit. Although it is predominantly residential, the city supports various industries, retail establishments, and public services that cater to the daily needs of its residents. Life in Mountlake Terrace is enhanced by a variety of community events, local restaurants, and nearby entertainment options, creating a vibrant atmosphere.

Transportation

Mountlake Terrace is easily accessible via Interstate 5, which runs just a few miles to the east, providing efficient travel to nearby destinations. The nearest airport is Seattle-Tacoma International Airport, located about 25 miles south of the city. Public transit options are available, including bus services that connect residents to other parts of Snohomish County and neighboring cities.

History

Mountlake Terrace was officially incorporated in 1954, evolving from a rural community to a suburban city as it attracted residents seeking a peaceful lifestyle. The city initially thrived on agriculture and dairy farming, but over the decades, development transformed it into a residential hub. Notable events in its history include the establishment of its parks system, which has been instrumental in promoting community engagement.

Did you know?

A lesser-known fact about Mountlake Terrace is that it has a unique commitment to preserving green spaces, with over 26 park areas within its boundaries. Additionally, the city hosts the famous Mountlake Terrace Arts and Music Festival each summer, bringing together local talent and art enthusiasts.

ZIP codes for Mountlake Terrace, WA (1)

ZIP code	City	County	Map
98043	Mountlake Terrace	Snohomish	View map

Demographics & statistics

21,347

Population

38.6

Median age

$96,085

Median household income

$50,367

Per capita income

$560,400

Median home value

$1,830

Median monthly rent

58.1%

Home ownership

7.3%

Poverty rate

4.1%

Unemployment

5,562

Housing units

41.2%

Bachelor's or higher

Age distribution

Male Female

409

Under 5

425

536

5–9

556

642

10–14

665

512

15–19

532

489

20–24

508

1,677

25–34

1,740

1,873

35–44

1,943

1,224

45–54

1,269

670

55–59

695

831

60–64

863

889

65–74

922

463

75–84

480

262

85+

272

← Male

Female →

Age summary

Group	Count	%
Under 18	3,929	18.4%
18 and over	17,418	81.6%
65 and over	3,288	15.4%
Median age	38.6 years

Race & ethnicity

White 60.7%

Asian 10.1%

Two or more races 8.7%

Hispanic or Latino 7.9%

Other race 6.4%

Black or African American 4.4%

American Indian / Alaska Native 1.2%

Native Hawaiian / Pacific Islander 0.6%

Group	Count	%
White	14,069	60.7%
Asian	2,343	10.1%
Two or more races	2,019	8.7%
Hispanic or Latino	1,835	7.9%
Other race	1,481	6.4%
Black or African American	1,023	4.4%
American Indian / Alaska Native	281	1.2%
Native Hawaiian / Pacific Islander	131	0.6%

Household income

Under $10k 3.6%

$10k–$15k 1.3%

$15k–$25k 4.1%

$25k–$35k 4.0%

$35k–$50k 5.7%

$50k–$75k 18.4%

$75k–$100k 16.3%

$100k–$150k 22.1%

$150k–$200k 11.5%

$200k+ 13.0%

Range	% of households
Under $10k	3.6%
$10k–$15k	1.3%
$15k–$25k	4.1%
$25k–$35k	4.0%
$35k–$50k	5.7%
$50k–$75k	18.4%
$75k–$100k	16.3%
$100k–$150k	22.1%
$150k–$200k	11.5%
$200k+	13.0%
Median income	$96,085

Housing

Home values

Under $50k 2.0%

$50k–$100k 0.8%

$150k–$200k 1.0%

$200k–$300k 5.2%

$300k–$500k 30.7%

$500k–$1M 57.2%

$1M+ 3.1%

Housing overview

Metric	Value
Median home value	$560,400
Median rent / month	$1,830
Owner occupied	58.1%
Renter occupied	41.9%
Vacant	4.0%
Single-family detached	50.9%
Large apartment buildings	15.9%
Mobile homes	2.0%
Median rooms	5.0
Avg household size (owned)	2.52

Year built

Era	%
2020 or later	1.0%
2010–2019	7.6%
2000–2009	2.4%
1990–1999	8.8%
1980–1989	13.5%
1970–1979	17.3%
1960–1969	24.4%
1950–1959	21.4%
1940–1949	2.7%
1939 or earlier	0.8%

Bedrooms

Size	% of units
No bedroom (studio)	1.9%
1 bedroom	15.2%
2 bedrooms	32.8%
3 bedrooms	32.2%
4 bedrooms	13.0%
5+ bedrooms	4.9%

Vehicles per household

Vehicles	% of households
No vehicle	4.9%
1 vehicle	35.7%
2 vehicles	39.9%
3 or more	19.5%

Heating fuel

Fuel type	%
Utility gas	31.3%
Electricity	63.7%
Propane / LP gas	1.5%
Fuel oil	1.0%
Wood	1.5%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	3,921	43.9%
Cohabiting couple	679	7.6%
Male householder, no spouse	1,731	19.4%
Female householder, no spouse	2,591	29.0%
Households with children under 18	2,348	26.3%
Households with seniors (65+)	2,405	27.0%
Average household size	2.37

Marital status

Status	Male	Female
Never married	33.8%	27.6%
Married	49.4%	44.5%
Separated	2.6%	4.2%
Widowed	2.5%	7.8%
Divorced	11.8%	15.8%

Education

Less than 9th grade 2.6%

Some HS, no diploma 3.5%

HS graduate 20.1%

Some college, no degree 21.5%

Associate's degree 11.1%

Bachelor's degree 26.8%

Graduate / professional 14.4%

Metric	%
HS diploma or higher	93.9%
Bachelor's or higher	41.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	165	3.6%
Kindergarten	119	2.6%
Elementary school	1,987	42.9%
High school	935	20.2%
College / grad school	1,428	30.8%

Employment

Industry of employment

Professional & management 20.6%

Education & healthcare 20.3%

Retail trade 11.5%

Arts, food & hospitality 10.0%

Construction 9.0%

Manufacturing 6.6%

Finance & real estate 5.5%

Other services 4.4%

Transportation & utilities 4.2%

Public administration 3.1%

Wholesale trade 2.5%

Information 1.6%

Agriculture & mining 0.8%

Occupation

Category	%
Management, business & arts	47.6%
Service	15.0%
Sales & office	17.2%
Natural resources & construction	10.7%
Production & transportation	9.4%

Employment type

Type	%
Private sector	80.3%
Government	12.2%
Self-employed	7.4%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	59.2%
Carpool	10.7%
Public transit	8.3%
Walk	1.7%
Other means	1.0%
Avg commute (minutes)	30.9

Poverty

All people 7.3%

Under 18 years 6.6%

18 and over 7.5%

Married-couple families 2.6%

Female-led households 6.5%

Income support

Source	% of households
Social Security	27.7%
Retirement income	20.4%
Supplemental Security	2.5%
Cash public assistance	4.8%
Food stamps / SNAP	7.4%

Health indicators

Condition	%
High blood pressure	25.7%
High cholesterol	27.3%
Heart disease	4.3%
Stroke	2.2%
Asthma	10.7%
Arthritis	22.3%
Kidney disease	2.2%
Pulmonary disease	4.5%
Cancer	5.7%

Behavior / access	%
Binge drinking	16.8%
No physical activity	17.9%
Less than 7 hrs sleep	33.5%
Fair or poor health	11.3%
Poor mental health	15.1%
Poor physical health	8.9%
No health insurance	10.5%
Visited doctor (checkup)	68.4%
Visited dentist	68.5%
Cholesterol screening	87.8%
Teeth loss	8.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,225	7.1%

Disability	%
Any disability	13.2%
Under 18	3.0%
18–64 years	9.7%
65 and over	40.7%

Health insurance coverage

Type	%
Private insurance	74.4%
Public insurance	30.6%
Uninsured under 19	9.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	20,513	96.1%
Spanish	1,641	8.0%
Other Indo-European	611	3.0%
Asian & Pacific Islander	268	1.3%
Other languages	627	3.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	17,433	81.7%
Born in same state	16,897	79.2%
Born in different state	9,734	45.6%
Foreign born	536	2.5%
Naturalized citizen	3,914	18.3%
Not a US citizen	2,111	53.9%

Ancestry

Ancestry	Count	%
French	2,617	12.3%
Italian	2,457	11.5%
Polish	1,194	5.6%
Arab	702	3.3%
English	246	1.2%

Ancestry	Count	%
Dutch	176	0.8%
German	139	0.7%
Irish	38	0.2%
Norwegian	16	0.1%

Technology access

Metric	% of households
Computer access	41.8%
Internet access	95.8%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Mountlake Terrace, WA have?

Mountlake Terrace, WA has one ZIP code: 98043. Each ZIP code serves a distinct delivery area within the city and surrounding region.