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Washington ZIP Codes
Snohomish County
Mukilteo, WA
98275
98275 ZIP Code — Mukilteo, WA
Snohomish County, Washington
ZIP code 98275 is located in
Mukilteo ,
Washington ,
within Snohomish County .
It covers approximately 7.31 square miles and serves a population of
21,365 residents.
This is a standard ZIP code in the Pacific (PT) timezone,
served by area code 425 .
About ZIP code 98275
The housing stock consists of a mix of housing types. Most homes were built in the 1990s, giving the area an established character. Median home value is $760,700. Owner-occupancy sits near the national average at 70%.
The gap between median ($123,036) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 6% is below the national average. 30% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 28 minutes is near the national average. Remote work is prevalent — 24% of workers work from home.
Educational attainment is high — 54% of residents hold a bachelor's degree or higher, well above the national average of 33%.
Overall, ZIP code 98275 reflects a community defined by a highly educated population, a high rate of remote workers, and a significant Social Security-dependent population.
98275 ZIP code map
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Cities in ZIP code 98275
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Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
21,365
Population density
2,923 / sq mi
State FIPS
53
County FIPS
061
Geography
Land area
7.31 sq mi
Water area
1.18 sq mi
Latitude
47.9131
Longitude
-122.3038
Timezone
Pacific (PT)
Area code
425
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
18.2%
24.8%
31.7%
$50k – $100k
30.5%
31.3%
30.6%
$100k – $200k
27.8%
32.6%
27.1%
Over $200k
23.5%
11.2%
10.6%
Demographics & statistics
$123,036
Median household income
$760,700
Median home value
$1,999
Median monthly rent
54.1%
Bachelor's or higher
Age distribution
Age summary
Group Count %
Under 18 4,646 21.7%
18 and over 16,719 78.3%
65 and over 3,703 17.3%
Median age 43.6 years
Race & ethnicity
Black or African American
1.3%
Native Hawaiian / Pacific Islander
0.3%
American Indian / Alaska Native
0.2%
Group Count %
White 13,773 62%
Asian 4,352 19.6%
Two or more races 2,229 10%
Hispanic or Latino 833 3.8%
Other race 597 2.7%
Black or African American 297 1.3%
Native Hawaiian / Pacific Islander 64 0.3%
American Indian / Alaska Native 53 0.2%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
18.2%
24.8%
31.7%
$50k – $100k
30.5%
31.3%
30.6%
$100k – $200k
27.8%
32.6%
27.1%
Over $200k
23.5%
11.2%
10.6%
Range % of households
Under $10k 2.3%
$10k–$15k 0.6%
$15k–$25k 4.5%
$25k–$35k 5.1%
$35k–$50k 3.8%
$50k–$75k 13.3%
$75k–$100k 8.1%
$100k–$150k 21.3%
$150k–$200k 10.8%
$200k+ 30.1%
Median income $123,036
Housing
Housing overview
Metric Value
Median home value $760,700
Median rent / month $1,999
Owner occupied 69.8%
Renter occupied 30.2%
Vacant 3.3%
Single-family detached 61.0%
Large apartment buildings 12.5%
Mobile homes 0.4%
Median rooms 6.2
Avg household size (owned) 2.68
Year built
Era %
2020 or later 0.1%
2010–2019 4.1%
2000–2009 19.0%
1990–1999 28.8%
1980–1989 26.1%
1970–1979 14.5%
1960–1969 4.6%
1950–1959 1.3%
1940–1949 0.6%
1939 or earlier 0.8%
Bedrooms
Size % of units
No bedroom (studio) 1.4%
1 bedroom 10.4%
2 bedrooms 25.7%
3 bedrooms 30.2%
4 bedrooms 21.9%
5+ bedrooms 10.4%
Vehicles per household
Vehicles % of households
No vehicle 2.2%
1 vehicle 27.8%
2 vehicles 44.5%
3 or more 25.5%
Heating fuel
Fuel type %
Utility gas 57.8%
Electricity 40.4%
Propane / LP gas 1.6%
Households & families
Household type Count %
Married-couple family 4,781 57.9%
Cohabiting couple 490 5.9%
Male householder, no spouse 1,142 13.8%
Female householder, no spouse 1,840 22.3%
Households with children under 18 2,534 30.7%
Households with seniors (65+) 2,746 33.3%
Average household size 2.58
Marital status
Status Male Female
Never married 29.8% 21.1%
Married 59.9% 54.6%
Separated 0.6% 2.2%
Widowed 2.9% 6.3%
Divorced 6.8% 15.7%
Education
Some college, no degree
18.1%
Graduate / professional
22.3%
Metric %
HS diploma or higher 98.2%
Bachelor's or higher 54.1%
School enrollment (ages 3–17)
Type Count %
Nursery / preschool 239 4.6%
Kindergarten 358 6.9%
Elementary school 2,056 39.6%
High school 1,058 20.4%
College / grad school 1,477 28.5%
Employment
Industry of employment
Education & healthcare
20.2%
Professional & management
16.9%
Finance & real estate
6.3%
Transportation & utilities
4.6%
Arts, food & hospitality
4.4%
Public administration
4.0%
Agriculture & mining
0.4%
Occupation
Category %
Management, business & arts 53.6%
Service 10.3%
Sales & office 21.3%
Natural resources & construction 4.9%
Production & transportation 9.8%
Employment type
Type %
Private sector 78.9%
Government 14.6%
Self-employed 6.5%
Unpaid family workers 0.0%
Commute
Method %
Drive alone 59.5%
Carpool 11.1%
Public transit 3.6%
Walk 0.6%
Work from home 23.6%
Other means 1.6%
Avg commute (minutes) 28.3
Poverty
Married-couple families
2.2%
Female-led households
19.0%
Income support
Source % of households
Social Security 30.1%
Retirement income 26.2%
Supplemental Security 4.2%
Cash public assistance 2.5%
Food stamps / SNAP 3.4%
Health indicators
Condition %
Obesity 28.4%
High blood pressure 26.7%
High cholesterol 29.8%
Diabetes 7.6%
Heart disease 4.4%
Stroke 2.1%
Asthma 10.0%
Arthritis 23.2%
Kidney disease 2.2%
Pulmonary disease 4.2%
Cancer 6.2%
Behavior / access %
Smoking 11.3%
Binge drinking 15.6%
No physical activity 16.4%
Less than 7 hrs sleep 31.9%
Depression 24.0%
Fair or poor health 10.1%
Poor mental health 13.3%
Poor physical health 8.3%
No health insurance 8.3%
Visited doctor (checkup) 69.8%
Visited dentist 72.3%
Cholesterol screening 90.2%
Teeth loss 6.9%
Veterans & disability
Veterans Count %
Civilian veterans 1,455 8.7%
Disability %
Any disability 9.8%
Under 18 3.7%
18–64 years 7.4%
65 and over 25.9%
Health insurance coverage
Type %
Private insurance 82.7%
Public insurance 23.2%
No insurance 4.5%
Uninsured under 19 4.3%
Language & origin
Language spoken at home (age 5+)
Language Count %
English only 20,088 94.0%
Spanish 2,113 10.5%
Other Indo-European 115 0.6%
Asian & Pacific Islander 286 1.4%
Other languages 1,680 8.4%
Place of birth & citizenship
Origin Count %
Native born (US) 16,841 78.8%
Born in same state 16,321 76.4%
Born in different state 8,817 41.3%
Foreign born 520 2.4%
Naturalized citizen 4,524 21.2%
Not a US citizen 3,141 69.4%
Ancestry
Ancestry Count %
French 2,825 13.2%
Italian 2,554 12%
Polish 1,777 8.3%
Arab 566 2.6%
English 319 1.5%
Ancestry Count %
German 197 0.9%
Dutch 143 0.7%
Irish 40 0.2%
Norwegian 11 0.1%
Technology access
Metric % of households
Computer access 38.6%
Internet access 98.8%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 98275
What city is ZIP code 98275 in?
ZIP code 98275 is primarily assigned to Mukilteo, Washington.
What county is ZIP code 98275 in?
ZIP code 98275 falls within Snohomish County, Washington.
How educated is the population of ZIP code 98275?
54% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
What is the median household income in ZIP code 98275?
The median household income in ZIP code 98275 is $123,036, above the national median of ~$75,000.
What is the typical home value in ZIP code 98275?
The median home value in ZIP code 98275 is $760,700.
What is the population of ZIP code 98275?
ZIP code 98275 has an estimated population of 21,365 residents, with a density of 2,922 people per square mile.
What timezone is ZIP code 98275 in?
ZIP code 98275 observes the PST timezone.
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