Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/WA/SAMMAMISH

Sammamish ZIP codes, Washington

Sammamish, WA has 2 ZIP codes (98074 and 98075) and area code 425. The largest is 98074.

USPS city name
2 ZIP codes
Overlapping the city
1 more
Population
66,463
Area code
425

NANPA lists no telephone rate centre for Sammamish itself, so these are the area codes of the nearest one, Bellevue (3.3 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Sammamish uses the ZIP codes above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Sammamish in numbers

About 66,463 people live in Sammamish, in 22,144 households, the 20th-largest of Washington's 628 census places. The median household income is $239,690 a year, 2.4 times the Washington median of $98,141 (US: $80,734). The median owner-occupied home is valued at $1,407,300 (2.5 times the Washington median), and median gross rent is $2,857 a month. The median age is 39.9; 77.1% of adults 25 and over hold a bachelor's degree or higher (39.6% across Washington); the average commute takes 29 minutes.

Population66,463Sammamish66,463
Households22,144Sammamish22,144
Median age39.9Sammamish39.9Washington38.3US 38.9
Median household income$239,690Sammamish$239,690Washington$98,141US $80,734
Median home value$1,407,300Sammamish$1,407,300Washington$564,600US $332,700
Median gross rent$2,857Sammamish$2,857Washington$1,760US $1,413
Bachelor's degree or higher77.1%Sammamish77.1%Washington39.6%US 35.7%
Mean commute29.3 minSammamish29.3 minWashington26.6 minUS 26.4 min
Population density3,254 / sq miSammamish3,254 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Sammamish city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Sammamish

ZIP codes with the USPS city name Sammamish
ZIP City Type Population Median income Median home
98074 Sammamish , WA Standard 30,761 $244,362 $1,366,900
98075 Sammamish , WA Standard 25,498 $250,000+ $1,599,100

Other ZIP codes overlapping Sammamish

These ZIP codes cover part of Sammamish but are addressed as somewhere else.

ZIP codes overlapping Sammamish
ZIP City Type Population Median income Median home
98029 Issaquah , WA Standard 30,586 $170,759 $1,063,200

Map of Sammamish ZIP codes

9807498075

The ZIP codes of Sammamish, WA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Sammamish

The nearest larger towns are Bellevue (151,847 people, 5.5 mi), Redmond (77,353 people, 6.8 mi) and Kirkland (92,621 people, 10 mi).

Towns near Sammamish
TownPopulationDistance
Issaquah 39,591 3.5 mi
Bellevue 151,847 5.5 mi
Union Hill-Novelty Hill 23,047 6.1 mi
Redmond 77,353 6.8 mi
Newcastle 12,989 7.4 mi
East Renton Highlands 12,582 8.6 mi
Snoqualmie 13,798 8.6 mi
Clyde Hill 3,119 8.7 mi
Mercer Island 25,307 9.2 mi
Mirrormont 4,019 9.5 mi
Medina 2,928 9.8 mi
Duvall 8,526 10.2 mi
Kirkland 92,621 10.5 mi
Cottage Lake 22,518 10.7 mi

More nearby: every ZIP code in King County · Washington ZIP codes

Cite this page

zipcodes.pro. “Sammamish, WA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wa/sammamish

Underlying data is public domain or openly licensed — sources, vintages and licences.