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/BLACK-DIAMOND

Black Diamond ZIP code, Washington

The ZIP code for Black Diamond, WA is 98010, and its area code is 360.

USPS city name
1 ZIP code
Overlapping the city
2 more
Population
5,961
Area code
360

Mail addressed to Black Diamond uses the ZIP code above. 2 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Black Diamond in numbers

About 5,961 people live in Black Diamond, in 2,316 households. The median household income is $141,383 a year, 44% above the Washington median of $98,141 (US: $80,734). The median owner-occupied home is valued at $779,100 (38% above the Washington median), and median gross rent is $1,453 a month. The median age is 38.1; 54.7% of adults 25 and over hold a bachelor's degree or higher (39.6% across Washington); the average commute takes 38 minutes.

Population5,961Black Diamond5,961
Households2,316Black Diamond2,316
Median age38.1Black Diamond38.1Washington38.3US 38.9
Median household income$141,383Black Diamond$141,383Washington$98,141US $80,734
Median home value$779,100Black Diamond$779,100Washington$564,600US $332,700
Median gross rent$1,453Black Diamond$1,453Washington$1,760US $1,413
Bachelor's degree or higher54.7%Black Diamond54.7%Washington39.6%US 35.7%
Mean commute37.5 minBlack Diamond37.5 minWashington26.6 minUS 26.4 min
Population density903 / sq miBlack Diamond903 / sq mi

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

ZIP codes addressed as Black Diamond

ZIP codes with the USPS city name Black Diamond
ZIP City Type Population Median income Median home
98010 Black Diamond , WA Standard 6,857 $142,048 $775,400

Other ZIP codes overlapping Black Diamond

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

ZIP codes overlapping Black Diamond
ZIP City Type Population Median income Median home
98022 Enumclaw , WA Standard 22,418 $120,406 $608,500
98092 Auburn , WA Standard 50,224 $122,300 $635,900

Map of Black Diamond ZIP codes

98010

The ZIP codes of Black Diamond, 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 Black Diamond

The nearest larger towns are Maple Valley (28,287 people, 3.7 mi), Lake Morton-Berrydale (11,183 people, 4.2 mi) and Covington (21,233 people, 5.3 mi).

Towns near Black Diamond
TownPopulationDistance
Maple Valley 28,287 3.7 mi
Lake Morton-Berrydale 11,183 4.2 mi
Lake Holm 3,555 5.3 mi
Covington 21,233 5.3 mi
Hobart 6,552 6.7 mi
Enumclaw 12,798 7.9 mi
Auburn 85,676 9.0 mi
Maple Heights-Lake Desire 4,113 9.1 mi
Lake Tapps 12,798 9.2 mi
Mirrormont 4,019 10.1 mi
Kent 135,603 10.4 mi
Bonney Lake 22,090 10.5 mi
Buckley 5,371 10.5 mi
Fairwood 17,856 10.8 mi

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

Cite this page

zipcodes.pro. “Black Diamond, WA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wa/black-diamond

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