ZIP code · Mukilteo · Washington · United States

ZIP code 98275 — Mukilteo

ZIP code 98275 serves Mukilteo, Washington.

Postal code
98275
Single source Value from one source, not cross-checked.
City
Mukilteo
County
Snohomish FIPS 53061
State
Washington
Country
United States
Coordinates
47.9199, -122.3019 — precision precise (locality)
View on OpenStreetMap
Population
21,312 (ZCTA, ACS 5-year)
Population density
2,914 / sq mi
Land area
7.3 sq mi (18.9 km²) (ZCTA, ACS 5-year)
Median household income
$122,612
Per-capita income
$63,001
Median age
44.3
Households
8,303
Housing units
8,492
Median home value
$830,000
Median gross rent
$2,127 / month
Congressional district
WA-2 (119th Congress)
USDA hardiness zone
8b (15 to 20 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Los_Angeles (UTC−8 / UTC−7 DST)
Area code
425 (from the nearest rate centre)
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Aug (avg high 73°F), coldest Dec (avg low 36°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F464852566366727368585045
Avg low °F373739434851555552464036
Precip in3.92.83.62.72.11.90.81.01.73.45.04.5

NOAA 1991–2020 climate normals from the nearest station: EVERETT SNOHOMISH AP (1.3 mi) · NOAA NCEI

Places in ZIP 98275

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page