PlainZIP

Black Diamond, WA · standard

ZIP Code 98010

King County, Washington - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

5,025
129/sq mi
$142,048
Median income
$775,400
Median home value
52.7%
Bachelor's or higher

The verdict

Black Diamond pairs a top-decile household income with top-decile home values, in a rural, homeowner-dominated area.

Top 5%
household income, US ZIPs
Top 5%
home value, US ZIPs
129
people per sq mi
86%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 98010 against every reporting US ZIP.

ZIP code 98010 is a mid-sized community (a standard USPS delivery area) in Black Diamond, King County, Washington, home to 5,025 residents across 39.0 square miles, a density of 129 people per square mile, in the Los Angeles time zone.

ZIP 98010 skews affluent, with a median household income of $142,048 (56% above the Washington average), while per-capita income is $66,955. Local economic indicators show a 2.3% poverty rate alongside 1.2% unemployment. Housing costs here run $775,400 for a typical home value (52% above the state average), with rent averaging $1,657 a month; 85.7% of homes are owner-occupied.

This is a highly-educated ZIP: 52.7% of adults hold a bachelor's degree or higher, the median age is 38.5, and the average commute is 37 minutes. A geography-based comparison follows: 5 ZIP codes within about 10 miles of 98010, plus 6 more within King County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 98010

Top 5 sectors by establishment count in Black Diamond, WA

Which industries have the most business establishments in ZIP 98010.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 98010, Black Diamond, WA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

5,025

Population

39.0

Area (sq mi)

129

People / sq mi

Los Angeles

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 98010?

38.5

Median Age

51.3%

Male

48.7%

Female

18.2%

Foreign-Born

White 67.4%
African American 0.4%
Asian 17.2%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 12.7%
Hispanic or Latino 7.3%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$142,048

Median Household Income

+56% vs state

$66,955

Per Capita Income

2.3%

Poverty Rate

1.2%

Unemployment Rate

37.3 min

Mean Commute Time

How ZIP 98010 ranks nationally

Black Diamond, WA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$142,048 Top 5% higher than 95% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). This entry sits in this band. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 66.4%
Bachelor's Degree or Higher 52.7%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

2,775

Total Housing Units

2,649

Occupied Units

126

Vacant Units

2.59

Avg Household Size

Occupancy Type

Owner 85.7%
Renter 14.3%

$775,400

Median Home Value

+52% vs state

$1,657

Median Rent

2001

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

-3.0%

YoY Change (2024)

309

HPI Index (2000 = 100)

+209%

Total Change Since 2000

Home values in ZIP 98010 have decreased 3.0% over the past year (2024). Since 2000, this ZIP has seen +209% cumulative appreciation.

Year Annual Change HPI Index
2020 +6.4% 216
2021 +14.9% 249
2022 +19.1% 296
2023 +7.6% 319
2024 -3.0% 309

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 152 business establishments in ZIP 98010, employing approximately 1,045 people with a combined annual payroll of $69,602,000.

152

Businesses

1,045

Employees

$69.6M

Annual Payroll

13

Industry Sectors

Industry Establishments % of Total
Construction 42 27.6%
Professional, scientific, and technical services 21 13.8%
Accommodation and food services 15 9.9%
Other services (except public administration) 15 9.9%
Retail trade 14 9.2%
Real estate and rental and leasing 11 7.2%
Health care and social assistance 7 4.6%
Wholesale trade 5 3.3%
Manufacturing 4 2.6%
Administrative and support and waste management and remediation services 4 2.6%
Mining, quarrying, and oil and gas extraction 3 2.0%
Transportation and warehousing 3 2.0%
Arts, entertainment, and recreation 3 2.0%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 98010 vs 98051 →

ZIP 98010 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 98010 ranks #5 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 98010 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 98010 ranks #2 of 6 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
98051 Ravensdale, WA 3,270 5.6 mi
98038 Maple Valley, WA 31,171 7.5 mi
98092 Auburn, WA 39,816 6.3 mi
98042 Kent, WA 43,673 6.6 mi
98058 Renton, WA 41,938 10.6 mi

More ZIP Codes in King County

98052 standard
Redmond, WA
Pop: 58,442
98023 standard
Federal Way, WA
Pop: 47,510
98115 standard
Seattle, WA
Pop: 46,206
98103 standard
Seattle, WA
Pop: 45,911
98133 standard
Seattle, WA
Pop: 44,555
98003 standard
Federal Way, WA
Pop: 44,151

Related Areas

King County Black Diamond, WA Washington

Frequently Asked Questions

What county is ZIP code 98010 in? ▼
ZIP code 98010 (Black Diamond) is located in King County, Washington. King County contains multiple ZIP codes, see the full list at /counties/king-wa.
What is the population of ZIP code 98010? ▼
ZIP code 98010 in Black Diamond, WA has a population of 5,025 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 98010? ▼
The median household income in ZIP 98010 is $142,048, which is 86% above the national average of $76,288.
What is the average home value in ZIP 98010? ▼
The median home value in ZIP 98010 is $775,400, which is 179% above the national average of $278,155.
What is the demographic makeup of ZIP 98010? ▼
The largest racial group in ZIP 98010 is White at 67.4%. Hispanic or Latino residents make up 7.3% of the population.
How many businesses are in ZIP code 98010? ▼
ZIP code 98010 has 152 business establishments employing approximately 1,045 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 98010? ▼
The top industries by establishment count in ZIP 98010 are: Construction (42), Professional, scientific, and technical services (21), Accommodation and food services (15). There are 13 industry sectors represented in total.
How have home values changed in ZIP code 98010? ▼
According to the FHFA House Price Index, home values in ZIP 98010 decreased by 3.0% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 209%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 98010? ▼
In ZIP code 98010, 66.4% of residents aged 25+ have a high school diploma or higher, and 52.7% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 98010? ▼
The mean commute time for workers in ZIP code 98010 is 37.3 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 98010? ▼
In ZIP code 98010, approximately 85.7% of occupied housing units are owner-occupied and 14.3% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 98010? ▼
The poverty rate in ZIP code 98010 is 2.3% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.